Markus Stange a18d35ca15 Bug 1491448 - Set the appropriate opaque region on the native layer. r=mattwoodrow
This can be verified by starting Firefox with the environment variables
CA_LAYER_SURFACE=0 CA_COLOR_OPAQUE=1
Transparent parts of the window will be red, and opaque parts will be green.

With this patch, the main browser window will be opaque except for the vibrant
areas, i.e. the tab bar and any open sidebars, which will be transparent.
Full screen video will be opaque.

Differential Revision: https://phabricator.services.mozilla.com/D40555

--HG--
extra : moz-landing-system : lando
2019-08-19 22:55:09 +00:00
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