cc: avoid redundant error report on android.

android browser compositor creates output surface without
worker context provider and sets default raster mode as zero-copy.
Avoid redundant setting and error reporting.

BUG=None
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Review-Url: https://codereview.chromium.org/2064543003
Cr-Commit-Position: refs/heads/master@{#399483}
1 file changed