Remove unnecessary WebGLRenderingContextBase unregistration.
The garbage collector takes care of clearing out weak references to
WebGLRenderingContextBase objects that the |forciblyEvictedContexts()|
and |activateContexts()| sets keep, before the objects are finalized.
Hence no need to additionally attempt to remove; just assert
non-membership.
R=haraken
BUG=
CQ_INCLUDE_TRYBOTS=tryserver.chromium.win:win_optional_gpu_tests_rel;tryserver.chromium.mac:mac_optional_gpu_tests_rel
Review URL: https://codereview.chromium.org/1815513002
Cr-Commit-Position: refs/heads/master@{#381916}
1 file changed
