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When building using jumbo, files gets merged and constants
with the same name may end up in the same scope and conflict.

This commit solves the issue by renaming the constants to
something more file specific.

Bug: 803406
Change-Id: I70976f012e9be6f395d4bfcc43e785515071ebb3
Reviewed-on: https://chromium-review.googlesource.com/1142783
Commit-Queue: Oscar Johansson <oscarj@opera.com>
Reviewed-by: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#576511}