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This allows the functionality of base::Location::Current() to be
verified in releases while still allowing a simple revert.

One minor difference from before is that the helper macro
FROM_HERE_WITH_EXPLICIT_FUNCTION is no longer supported. Since
cc::BeginFrameTracker is the only user of this macro and doesn't
appear to need it, just revert it to use FROM_HERE directly.

Bug: 974061
Change-Id: Iae09bc02caf9f095a3ace9ea3ac70ded3dd493e4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1990262
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: danakj <danakj@chromium.org>
Reviewed-by: Alexander Timin <altimin@chromium.org>
Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Auto-Submit: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#731804}