tree fc72112a43ac959d7b130d551a07cd4697db2546
parent 685d7a3c104da41d54434d0031669a49f457f68b
author Lloyd Pique <lpique@google.com> 1548816174 -0800
committer Lloyd Pique <lpique@google.com> 1550627719 -0800

SF: Refactor onLayerDisplayed

Adds a new LayerFE::onLayerDisplayed interface, and adjusts the
front-end Layer to match.

Adjusts the code in SurfaceFlinger to use the new interface, in
preparation to moving the loop over to CompositionEngine.

Test: atest libsurfaceflinger_unittest libcompositionengine_test
Bug: 121291683
Change-Id: I9231f4b425ea1b9f37363521c7e3f6aef63bcec6