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FrameSink debug labels are useful to identify the client associated with a
particular FrameSink or Surface. This CL introduces the appropriate plumbing
to allow printing the FrameSink debug label given a FrameSinkId from the
surfaces layer. The debug label will now be printed if a temporary
reference is orphand and will be garbage collected.

Bug: 655231
Change-Id: I75abd9b6aff484fee946e2ee584bd9927a0b843c
Reviewed-on: https://chromium-review.googlesource.com/c/1320018Reviewed-by: kylechar <kylechar@chromium.org>
Commit-Queue: Fady Samuel <fsamuel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#605846}