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Adds the necessary Chromium-side changes to fix stack symbolization for
non-browser crashes in GPU Telemetry tests on Android. Specifically:

1. Makes the GPU tests use GetStackTrace() on Android instead of
   LogSymbolizedUnsymbolizedMinidumps(), as this is currently the only
   way to get stack traces through Telemetry on Android.
2. Adds a --breakpad-dump-location argument to ChromeCrashReporterClient
   that is functionally equivalent to the existing
   BREAKPAD_DUMP_LOCATION environment variable, but necessary for
   Android since we can't set environment variables before launching
   Chrome on Android.
3. Moves the dump location override to ChromeCrashReporterClient::Create
   instead of whe retrieving the crash dump location in order to avoid
   issues with Android calling blocking functions in a scope that does
   not allow blocking functions.

Bug: 949321
Change-Id: I9be2446a73a2359157cd94c889bf34951b78c86b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1825719
Commit-Queue: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Auto-Submit: Brian Sheedy <bsheedy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#700407}