GitLab

The clients of SharedContextState (OOP-R, SharedImage, and SkiaRenderer)
do not care which GLSurface is bound as default FBO in the common case.
Changing the current surface has a non-trivial cost on Android Adreno
devices, even with virtual contexts enabled. This CL does a bit of
caching to avoid these unnecessary calls.

Change-Id: I0e3ec6308659644a725723295ef0b3109f22794f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1969736
Commit-Queue: Jonathan Backer <backer@chromium.org>
Reviewed-by: Peng Huang <penghuang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#725978}