For media element, as the spec requires that we should know the whether it can be allowed to play when we call `media.play()` [1], which means that we should get the result before the play invocation.
Therefore, we request for the play permission when we create media element.
Differential Revision: https://phabricator.services.mozilla.com/D52438
--HG--
extra : moz-landing-system : lando
Move helper functions out from `AutoplayPolicy`, makes us clearly know which one could really be used to determine the blocking autoplay result. It also give other classes an ability to use those helper functions if they have a need.
Differential Revision: https://phabricator.services.mozilla.com/D52432
--HG--
extra : moz-landing-system : lando
Unlink must not cause an AddRef on the unlinked object, or it is at risk of
leaking. See 1593739 for an example of where this happens.
EndCloningVisually is dangerous in that it tries to do more than just unlink the
video element. It does AddRef in NotifyUAWidgetSetupOrChange, so that must be
avoided.
Previous patches to this bug make sure that MediaDecoder shutdown takes care of
clearing the secondary video container in the MediaDecoder stack, so this is not
actually necessary anymore.
Differential Revision: https://phabricator.services.mozilla.com/D53832
--HG--
extra : moz-landing-system : lando
This patch does the following:
- Makes cloneElementVisually() return a promise
- Plumbs an event from the MediaDecoderStateMachine's VideoSink to
HTMLVideoElement
- Hooks the event up to resolve the promise from cloneElementVisually()
- Updates tests and their expectations.
Differential Revision: https://phabricator.services.mozilla.com/D53831
--HG--
extra : moz-landing-system : lando
This better follows how MediaDecoder and MediaDecoderStateMachine was
architected.
Differential Revision: https://phabricator.services.mozilla.com/D53710
--HG--
extra : moz-landing-system : lando
Unlink must not cause an AddRef on the unlinked object, or it is at risk of
leaking. See 1593739 for an example of where this happens.
EndCloningVisually is dangerous in that it tries to do more than just unlink the
video element. It does AddRef in NotifyUAWidgetSetupOrChange, so that must be
avoided.
Previous patches to this bug make sure that MediaDecoder shutdown takes care of
clearing the secondary video container in the MediaDecoder stack, so this is not
actually necessary anymore.
Differential Revision: https://phabricator.services.mozilla.com/D53832
--HG--
extra : moz-landing-system : lando
This patch does the following:
- Makes cloneElementVisually() return a promise
- Plumbs an event from the MediaDecoderStateMachine's VideoSink to
HTMLVideoElement
- Hooks the event up to resolve the promise from cloneElementVisually()
- Updates tests and their expectations.
Differential Revision: https://phabricator.services.mozilla.com/D53831
--HG--
extra : moz-landing-system : lando
This better follows how MediaDecoder and MediaDecoderStateMachine was
architected.
Differential Revision: https://phabricator.services.mozilla.com/D53710
--HG--
extra : moz-landing-system : lando
Unlink of mSrcStream used to rely on EndSrcMediaStreamPlayback to unhook
everything. That method does more than necessary however, and if anything in it
creates a strong reference to the media element, we risk a leak.
This patch takes what's necessary to unhook from EndSrcMediaStreamPlayback and
runs it explicitly from Unlink, to avoid anything unnecessary being run as well.
Differential Revision: https://phabricator.services.mozilla.com/D51906
--HG--
extra : moz-landing-system : lando
Unlink of mSrcStream used to rely on EndSrcMediaStreamPlayback to unhook
everything. That method does more than necessary however, and if anything in it
creates a strong reference to the media element, we risk a leak.
This patch takes what's necessary to unhook from EndSrcMediaStreamPlayback and
runs it explicitly from Unlink, to avoid anything unnecessary being run as well.
Differential Revision: https://phabricator.services.mozilla.com/D51906
--HG--
extra : moz-landing-system : lando
The two loops where they're used can't walk across shadow boundaries, so we only
need to check for NAC.
We don't have forms in NAC, so avoid silly book-keeping and just return early
for those cases.
Differential Revision: https://phabricator.services.mozilla.com/D53045
--HG--
extra : moz-landing-system : lando
It is no longer needed with captured tracks' lifetimes spanning across seek
operations.
Differential Revision: https://phabricator.services.mozilla.com/D52051
--HG--
extra : moz-landing-system : lando
This reworks how media element captureStream works by removing the differences
between MediaStream and MediaDecoder capture. MediaDecoder capture will be
refactored so that ownership of MediaStreamTracks lies with the media element
instead of the OutputStreamManager. The internal MediaDecoder parts happen in a
later patch.
The new API for capturing a MediaDecoder involves a boolean on/off toggle, the
output tracks the decoder pipes data to, and the principal that data is tagged
with. If capturing is on but there are no output tracks, playback will not
happen, to ensure that no data gets accidentally skipped in the output tracks
while captured.
This also changes the logic for setting up MediaElementTrackSources in
HTMLMediaElement so it's triggered by the WatchManager and thus run in tail
dispatched runnables.
Differential Revision: https://phabricator.services.mozilla.com/D52040
--HG--
extra : moz-landing-system : lando
It is no longer needed with captured tracks' lifetimes spanning across seek
operations.
Differential Revision: https://phabricator.services.mozilla.com/D52051
--HG--
extra : moz-landing-system : lando
This reworks how media element captureStream works by removing the differences
between MediaStream and MediaDecoder capture. MediaDecoder capture will be
refactored so that ownership of MediaStreamTracks lies with the media element
instead of the OutputStreamManager. The internal MediaDecoder parts happen in a
later patch.
The new API for capturing a MediaDecoder involves a boolean on/off toggle, the
output tracks the decoder pipes data to, and the principal that data is tagged
with. If capturing is on but there are no output tracks, playback will not
happen, to ensure that no data gets accidentally skipped in the output tracks
while captured.
This also changes the logic for setting up MediaElementTrackSources in
HTMLMediaElement so it's triggered by the WatchManager and thus run in tail
dispatched runnables.
Differential Revision: https://phabricator.services.mozilla.com/D52040
--HG--
extra : moz-landing-system : lando
Other browsers don't, plus it blocks work I want to do to query multiple links
at the same time.
Differential Revision: https://phabricator.services.mozilla.com/D52443
--HG--
extra : moz-landing-system : lando
Other browsers don't, plus it blocks work I want to do to query multiple links
at the same time.
Differential Revision: https://phabricator.services.mozilla.com/D52443
--HG--
extra : moz-landing-system : lando
Other browsers don't, plus it blocks work I want to do to query multiple links
at the same time.
Differential Revision: https://phabricator.services.mozilla.com/D52443
--HG--
extra : moz-landing-system : lando
This is especially important for media elements playing MediaStreams, since the
streams can be manipulated to end playback of the elements synchronously by
either stopping or removing their tracks.
Differential Revision: https://phabricator.services.mozilla.com/D49385
--HG--
extra : moz-landing-system : lando
The remaining notification methods are moved in a separate commit. The
files are renamed to `MutationObservers.*` in a follow-up commit.
Depends on D51824
Differential Revision: https://phabricator.services.mozilla.com/D51825
--HG--
extra : moz-landing-system : lando
Spoof dom/dom.properties, layout/xmlparser.properties,
layout/MediaDocument.properties to en-US if needed.
Differential Revision: https://phabricator.services.mozilla.com/D46034
--HG--
extra : moz-landing-system : lando
It started progressing as soon as we set up the rendering of the tracks in the
stream, which is too early according to the HTMLMediaElement spec.
Now it starts progressing when we're potentially playing. The difference being
that we now wait for mReadyState to go beyond HAVE_CURRENT_DATA before hooking
up the time progression mechanism.
Differential Revision: https://phabricator.services.mozilla.com/D49354
--HG--
extra : moz-landing-system : lando
This makes all inputs to IsPotentiallyPlayin() Watchable when we're playing a
MediaStream.
Differential Revision: https://phabricator.services.mozilla.com/D49353
--HG--
extra : moz-landing-system : lando
Spoof dom/dom.properties, layout/xmlparser.properties,
layout/MediaDocument.properties to en-US if needed.
Differential Revision: https://phabricator.services.mozilla.com/D46034
--HG--
extra : moz-landing-system : lando
For allowing `TextEditor` to dispatch DOM events synchronously, we should
remove `AutoScriptBlocker` in `TextControlState::SetValue()` right now.
According to the comment around the `AutoScriptBlocker`, `PrepareEditor()`
may be called while setting value. Therefore, this patch makes
`AutoTextControlHandlingState` call it if `PrepareEditor()` is called
while handling `SetValue()` and when the top most `SetValue()` ends its job.
Depends on D51396
Differential Revision: https://phabricator.services.mozilla.com/D51397
--HG--
extra : moz-landing-system : lando
Currently, "input" event is fired when the `AutoScriptBlocker` in `SetValue()`
is deleted. So, for keeping same behavior, the post processing after calling
`TextEditor` methods should be done before editor dispatches "input" event.
Fortunately, `TextInputListener::OnEditActionHandled()` is a good chance to
do that. Therefore, this patch makes it notify `TextControlState` and
`AutoTextControlHandlingState`.
Note that ideally, each method of `TextEditor` should return
`NS_ERROR_OUT_OF_MEMORY` coming from
`AutoTextControlHandlingState::OnEditActionHandled()`. However, it requires
a lot of changes in editor classes, and the case is really rare since editor
does not use fallible allocation. Therefore, it must be okay to crash in
editor if `OnEditActionHandled()` returns `NS_ERROR_OUT_OF_MEMORY`.
Depends on D51395
Differential Revision: https://phabricator.services.mozilla.com/D51396
--HG--
extra : moz-landing-system : lando
`TextControlState::SetValue()` does 4 things.
1. Committing composition if there is and if possible.
2. Setting value with `TextEditor` if text editor and frame are available.
3. Setting value without `TextEditor` otherwise.
4. Notifying value changed.
We can split #2 and #3 from it now because `AutoTextControlHandlingState`
manages nested actions. Therefore, this patch creates
`SetValueWithTextEditor()` and `SetValueWithoutTextEditor()` which take
`AutoTextControlHandlingState`.
Depends on D51394
Differential Revision: https://phabricator.services.mozilla.com/D51395
--HG--
extra : moz-landing-system : lando
Currently, only `HTMLInputElement` reuses `TextControlState` instance since
`HTMLTextAreaElement` had the instance as a member rather than allocate it.
Now, all instances are allocated in the heap independently for guaranteeing
their lifetime. So, the reuse mechanism should be managed by
`TextControlState` itself.
Depends on D51393
Differential Revision: https://phabricator.services.mozilla.com/D51394
--HG--
extra : moz-landing-system : lando
Currently, nobody guarantees that `TextControlState` won't be deleted while
it handles something with `MOZ_CAN_RUN_SCRIPT` methods.
This patch hides its destructor (and constructor) for making only
`TextControlState` itself can delete its instances. Then, if instance owner
wants to delete it while handling action(s), the oldest `AutoHandlingState`
will delete the `TextControlState`.
Depends on D51392
Differential Revision: https://phabricator.services.mozilla.com/D51393
--HG--
extra : moz-landing-system : lando
Some members of `TextControlState` are initialized and restored in same block
scopes. Therefore, with creating new stack only class and storing latest one
with a new member variable, we can store all of them in the stack.
Depends on D51391
Differential Revision: https://phabricator.services.mozilla.com/D51392
--HG--
extra : moz-landing-system : lando
It should be in `mozilla` namespace and it manages not only `TextEditor`,
manages selection, selection controller and callback from editor. so that
I think it stores state of "text control widget". Therefore, I name it to
`TextControlState`.
And cleaning up the cpp file.
Differential Revision: https://phabricator.services.mozilla.com/D51391
--HG--
rename : dom/html/nsTextEditorState.cpp => dom/html/TextControlState.cpp
rename : dom/html/nsTextEditorState.h => dom/html/TextControlState.h
extra : moz-landing-system : lando
When JS is paused, VRService will automatically shutdown because the timer is not updated,
we used to create a new VRDisplay to JS. However, the page is still using the older VRDisplay,
so it can't get the newest VRDisplayInfo status. We should exit presentation and
apply the VRDisplayInfo status to the original VRDisplay instead of creating new one.
Besides, we also need to release the VR screen buffer after exiting the immersive mode to avoid eglMakeCurrent error.
Differential Revision: https://phabricator.services.mozilla.com/D50558
--HG--
extra : moz-landing-system : lando
The spec change HTMLObjectElement tabIndex default to 0, but `test_object_plugin_nav.html` will fail due to HTMLObjectElement’s sequence focus and .focus() rely on default tabIndex. In this patch I separate the logic to not rely on default tabIndex for HTMLObjectElement's plugin type and align the spec.
Differential Revision: https://phabricator.services.mozilla.com/D50801
--HG--
extra : moz-landing-system : lando
Currently, `nsFrameSelection::CommonPageMove()` is called before every caller
calls `nsFrameSelection::ScrollSelectionIntoView()`. However, when an editing
host has focus, the scroll target may be outside of it. In such case, without
moving caret, user may want only to scroll the scrollable element.
Chrome behaves like so. Chrome also can scroll outside scrollable element
of focused editing host. However, it scrolls caret into view only when
caret is moved actually. Therefore, it makes sense to follow this behavior.
This patch makes `nsFrameSelection::CommonPageMove()` also call
`nsFrameSelection::ScrollSelectionIntoView()`. However, it newly takes
`SelectionIntoView` flag for making callers can choose the condition. I.e.,
`ScrollSelectionIntoView()` should be called always, or only when selection
is actually changed, or shouldn't be called.
Differential Revision: https://phabricator.services.mozilla.com/D50178
--HG--
extra : moz-landing-system : lando
Currently, `nsFrameSelection::CommonPageMove()` is called before every caller
calls `nsFrameSelection::ScrollSelectionIntoView()`. However, when an editing
host has focus, the scroll target may be outside of it. In such case, without
moving caret, user may want only to scroll the scrollable element.
Chrome behaves like so. Chrome also can scroll outside scrollable element
of focused editing host. However, it scrolls caret into view only when
caret is moved actually. Therefore, it makes sense to follow this behavior.
This patch makes `nsFrameSelection::CommonPageMove()` also call
`nsFrameSelection::ScrollSelectionIntoView()`. However, it newly takes
`SelectionIntoView` flag for making callers can choose the condition. I.e.,
`ScrollSelectionIntoView()` should be called always, or only when selection
is actually changed, or shouldn't be called.
Differential Revision: https://phabricator.services.mozilla.com/D50178
--HG--
extra : moz-landing-system : lando
The following tests are not removed and need to be ported to Shadow DOM:
- test_bug330925.xhtml
- test_bug372086.html
- test_bug319374.xhtml
Differential Revision: https://phabricator.services.mozilla.com/D50650
--HG--
extra : moz-landing-system : lando
Changes:
- remove skiaContent from `dom/html/reftests/autofocus/reftest.list`
Differential Revision: https://phabricator.services.mozilla.com/D50543
--HG--
extra : moz-landing-system : lando
Everytime when we start a controller, we should also update its audible state correctly, in order to request audio focus correctly.
Differential Revision: https://phabricator.services.mozilla.com/D50151
--HG--
extra : moz-landing-system : lando
Bug 917325 started using the `username` token.
Bug 1119063 started using the `new-password` token. This patch also adds support for `current-password` since it's the counterpart to `new-password` and we plan to use it as a signal eventually so want to encourage its use.
Differential Revision: https://phabricator.services.mozilla.com/D50351
--HG--
extra : moz-landing-system : lando
Most of these tests have been disabled for a long time; they run well
in the current test environment.
I intend to enable still more mochitests in a future patch.
Differential Revision: https://phabricator.services.mozilla.com/D49524
--HG--
extra : moz-landing-system : lando
When `nsTextEditorState::SetValue()` is called with `eSetValue_BySetUserInput`,
we emulate user input. I.e., keep using transaction manager of the editor,
events fired while handling user input should be fired.
Currently, `nsTextEditorState::SetValue()` suppresses multiple state handling
while setting value with calling `mTextListener->SettingValue(true)`. This
is why `"input"` event listeners cannot retrieve the latest state of validation
if `inputType` is `"insertReplacementText"`.
This patch makes it keep managing `mTextListener` when setting the value
programatically. Otherwise, i.e., it emulates user input, editor should
manage it from `EditorBase::NotifyEditorObservers()` instead so that this
patch makes it not managing `mTextListener` in such case.
Differential Revision: https://phabricator.services.mozilla.com/D49571
--HG--
extra : moz-landing-system : lando
It can be unset by NotifyShutdown, to release the VideoFrameContainer in time.
This is unexpected for all paths assuming it will be unset by
EndSrcMediaStreamPlayback().
Depends on D49573
Differential Revision: https://phabricator.services.mozilla.com/D49574
--HG--
extra : moz-landing-system : lando
I don't think these need invalidation of any sort since they only depend on
ancestors, and we recreate accessibles when the element's ancestor chain changes.
Differential Revision: https://phabricator.services.mozilla.com/D49408
--HG--
extra : moz-landing-system : lando
Most of these tests have been disabled for a long time; they run well
in the current test environment.
With the additional tests running, task times increase; I have added one
more test chunk for android mochitest-plain.
These tests were identified from a random sampling of mochitest manifests;
I intend to enable more mochitests in future patches.
Differential Revision: https://phabricator.services.mozilla.com/D48912
--HG--
extra : moz-landing-system : lando
This flag is only meant for window.open() stuff, so not relevant to iframes at
all.
This preserves the current fission behavior (which is quite broken) of always
showing scrollbars.
The way to control scrollbars for iframes (the scrolling attribute) is not
handled at all for Fission, I filed a bug and left a few FIXMEs.
Differential Revision: https://phabricator.services.mozilla.com/D49292
--HG--
extra : moz-landing-system : lando
When XBL is disabled, no code in dom/xbl will be built. Also, adds ifdefs
to remove any of the XBL related code elsewhere. There's definitely more
that can be done here, but I think it's better to wait to do the rest of
the cleanup when we actually remove the code.
Depends on D45612
Differential Revision: https://phabricator.services.mozilla.com/D45613
--HG--
extra : moz-landing-system : lando
This change mainly removes the `mTracks` member from MediaStream and moves all
associated members up a level, so that a MediaStream in practice represents a
single track.
Classes will be renamed in a future patch to reflect this.
Other changes include:
The new `mEnded` member of MediaStream changes meaning to only become true when
all data in the stream has been processed. It stems from
StreamTracks::Track::mEnded which used to become true as soon as the last bit of
data had been added to a track, and there could still be data in the track that
would get processed in future iterations. We are moving towards not having any
future data in tracks, which is why this change is ok to make -- keeping the old
behavior will soon not make sense.
TrackUnionStream is changed to no longer take a list of streams as input and
forward the union of their tracks to itself. Instead it's limited to having one
track as input at a time.
The autofinishing functionality that TrackUnionStream had before has been
transformed into an autoending functionality to allow it to defer ending until
its been told that it's ok to end through the control API. This lets a single
TrackUnionStream span the lifetime of multiple inputs, which will be useful for
making DecodedStream spec compliant with HTMLMediaElement::CaptureStream(), and
for implementing the currently discussed MediaRecorder::ReplaceTrack(), to name
a few potential use cases.
AudioNodeStreams used to only have a track (and thus an AudioSegment) if the
EXTERNAL_OUTPUT flag was enabled on them. With all MediaStreams now representing
a track, AudioNodeStreams inherently have an AudioSegment as a member. It is
however only used with data if the EXTERNAL_OUTPUT flag is enabled.
Differential Revision: https://phabricator.services.mozilla.com/D45821
--HG--
extra : moz-landing-system : lando
This functionality is not used since we moved to only having a single track per
MediaStream (bug 1493613).
Differential Revision: https://phabricator.services.mozilla.com/D47686
--HG--
extra : moz-landing-system : lando
This change mainly removes the `mTracks` member from MediaStream and moves all
associated members up a level, so that a MediaStream in practice represents a
single track.
Classes will be renamed in a future patch to reflect this.
Other changes include:
The new `mEnded` member of MediaStream changes meaning to only become true when
all data in the stream has been processed. It stems from
StreamTracks::Track::mEnded which used to become true as soon as the last bit of
data had been added to a track, and there could still be data in the track that
would get processed in future iterations. We are moving towards not having any
future data in tracks, which is why this change is ok to make -- keeping the old
behavior will soon not make sense.
TrackUnionStream is changed to no longer take a list of streams as input and
forward the union of their tracks to itself. Instead it's limited to having one
track as input at a time.
The autofinishing functionality that TrackUnionStream had before has been
transformed into an autoending functionality to allow it to defer ending until
its been told that it's ok to end through the control API. This lets a single
TrackUnionStream span the lifetime of multiple inputs, which will be useful for
making DecodedStream spec compliant with HTMLMediaElement::CaptureStream(), and
for implementing the currently discussed MediaRecorder::ReplaceTrack(), to name
a few potential use cases.
AudioNodeStreams used to only have a track (and thus an AudioSegment) if the
EXTERNAL_OUTPUT flag was enabled on them. With all MediaStreams now representing
a track, AudioNodeStreams inherently have an AudioSegment as a member. It is
however only used with data if the EXTERNAL_OUTPUT flag is enabled.
Differential Revision: https://phabricator.services.mozilla.com/D45821
--HG--
extra : moz-landing-system : lando
This functionality is not used since we moved to only having a single track per
MediaStream (bug 1493613).
Differential Revision: https://phabricator.services.mozilla.com/D47686
--HG--
extra : moz-landing-system : lando
The request is used to track if the promise is resolved or not, so we should call its `Complete()` method once promise is resolved, in order to keep the state of the request correct.
Differential Revision: https://phabricator.services.mozilla.com/D47331
--HG--
extra : moz-landing-system : lando
This is an easier thing to implement interoperably than what we implement now,
which is basically "whatever goes through this function".
Differential Revision: https://phabricator.services.mozilla.com/D47145
--HG--
extra : moz-landing-system : lando
In bug1583978, we are going to remove `AudibleState::eMaybeAudible`. But before that, as `AudibleState::eMaybeAudible` is only used for delaying media playback, so we can remove its usage from media element and move it to the dedicated class to reduce confusion about how and when we should use `AudibleState::eMaybeAudible` or `AudibleState::eNotAudible`.
Differential Revision: https://phabricator.services.mozilla.com/D47153
--HG--
extra : moz-landing-system : lando
Now `AudioChannelWrapper` would only start `AudioChannelAgent` when media starts and stop the agent when media stops. It won't handle any case with `SUSPENDED_BLOCK`.
It's clearer to know when we would start or stop the agent in AudioChannelWrapper.
In addition, in bug1577890, we will remove more unnecessary logic which is used for Fennec only in order to make `AudioChannelWrapper` cleaner.
Differential Revision: https://phabricator.services.mozilla.com/D44747
--HG--
extra : moz-landing-system : lando
Separate the logic of delaying media playback from `HTMLMediaElement`'s `mAudioChannelWrapper` to a new class, because delaying media playback is a special usage of using `AudioChannelAgent`.
It would make the code cleaner and separate the normal usage and the special usage, to reduce confusion.
We usually start `AudioChannelAgent` when media playback starts and stop it when media playback stops, however, in this case, we would start the agent even if media hasn't be started yet, because we would like to use the agent as a connection with `AudioChannelService` in order to receive the resume command when we're able to play delayed playback.
Differential Revision: https://phabricator.services.mozilla.com/D44746
--HG--
extra : moz-landing-system : lando
As we have another usage to know whether media is audible or not, we remove this function from AudioChannelWrapper and make it as media element's function.
In addition, it also makes sense to have this function for media element, because the result is decided by media element's own attributes.
Differential Revision: https://phabricator.services.mozilla.com/D44744
--HG--
extra : moz-landing-system : lando
There are some checking conditions can be reordered or simplified in order to remove some unnecessary check.
Differential Revision: https://phabricator.services.mozilla.com/D47027
--HG--
extra : moz-landing-system : lando
After applying patch4, now we would pull the change from `AudioChannelService` everytime after starting the agent, so we don't need to rely on letting `NotifyStartedPlaying()` to modify the config and use it to update our state.
Differential Revision: https://phabricator.services.mozilla.com/D45753
--HG--
extra : moz-landing-system : lando
As we start audio capturing explicitly, we should also take responsibility to stop audio capturing when we don't need it.
We were hiding too many details on `AudioChannelAgent` before, which allow us hard to know who and where we handle audio capturing.
Differential Revision: https://phabricator.services.mozilla.com/D45752
--HG--
extra : moz-landing-system : lando
Instead of calling those callback functions seperately, we could provide a function to pull those changes at once after starting the agent.
In addition, `WindowXXXChanged` are callback functions of `nsIAudioChannelAgentCallback`, so they should only be called by `AudioChannelAgent`, to indicate receiving the change from `AudioChannelService`. We should not call them directly.
Differential Revision: https://phabricator.services.mozilla.com/D45751
--HG--
extra : moz-landing-system : lando
We have already had the same checking in `AudioCaptureStreamChange()`, so we can remove the checking in `AudioCaptureStreamChangeIfNeeded()`.
Differential Revision: https://phabricator.services.mozilla.com/D45749
--HG--
extra : moz-landing-system : lando
After applying patch4, now we would pull the change from `AudioChannelService` everytime after starting the agent, so we don't need to rely on letting `NotifyStartedPlaying()` to modify the config and use it to update our state.
Differential Revision: https://phabricator.services.mozilla.com/D45753
--HG--
extra : moz-landing-system : lando
As we start audio capturing explicitly, we should also take responsibility to stop audio capturing when we don't need it.
We were hiding too many details on `AudioChannelAgent` before, which allow us hard to know who and where we handle audio capturing.
Differential Revision: https://phabricator.services.mozilla.com/D45752
--HG--
extra : moz-landing-system : lando
Instead of calling those callback functions seperately, we could provide a function to pull those changes at once after starting the agent.
In addition, `WindowXXXChanged` are callback functions of `nsIAudioChannelAgentCallback`, so they should only be called by `AudioChannelAgent`, to indicate receiving the change from `AudioChannelService`. We should not call them directly.
Differential Revision: https://phabricator.services.mozilla.com/D45751
--HG--
extra : moz-landing-system : lando
We have already had the same checking in `AudioCaptureStreamChange()`, so we can remove the checking in `AudioCaptureStreamChangeIfNeeded()`.
Differential Revision: https://phabricator.services.mozilla.com/D45749
--HG--
extra : moz-landing-system : lando
People keep adding useless null-checks and it was not clear what the consensus
was from bug 1441165, but this should be unobjectionable I guess.
Differential Revision: https://phabricator.services.mozilla.com/D46781
--HG--
extra : moz-landing-system : lando
