Merge "Implement SkiaGLRenderEngine::cleanFramebufferCache" into sc-dev am: ddd47e3e22

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/13876045

Change-Id: Icbe2ac7d80a6d26151b1901c1006dd2931e3f56a