Jan Henning 50803fba6b Bug 1476106 - Part 1 - Make it possible to notify Java listeners from GeckoScreenOrientation, too. r=snorp
Once responsibility for notifying GeckoScreenOrientation of potentially changed
screen orientations moves from GeckoApp into GeckoView, the former will no
longer be able to benefit from the return value of calling GeckoScreen-
Orientation.update(), indicating whether the orientation actually changed or in
fact remained the same.

GeckoApp however requires that information in order to reset/refresh parts of
the UI when the orientation changes, and since GeckoScreenOrientation is already
doing all the work of tracking screen orientation changes, we don't want to have
to partially duplicate those efforts again in GeckoApp.

Instead, we introduce a mechanism for GeckoScreenOrientation to notify
interested parties on the Android app side as well.

The GeckoScreenOrientation.update() call in GeckoApp.onResume() is removed
completely (as opposed to merely removing the refreshChrome() bit) at this stage
already because it is unnecessary. If any screen rotation happened while the
activity was in background, it will receive an onConfigurationChanged() call
anyway before being resumed again.

MozReview-Commit-ID: Ila1evcj8Ud

--HG--
extra : rebase_source : f342800628f930d717fe346779894793a1bac0e9
2018-08-02 21:10:33 +02:00

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