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This reverts commit 659b4301.

Reason for revert: Likely caused compile failure in android x86 builders since:
* https://ci.chromium.org/p/chromium/builders/ci/android-pie-x86-rel/2148
* https://ci.chromium.org/p/chromium/builders/ci/android-marshmallow-x86-rel/1252

Tracking bug: crbug.com/1126519

Original change's description:
> Android: Add support for tracing sampling profiler on arm64
> 
> Support stack unwinding for tracing sampling profiler, in arm64
> builds. The builds always enable frame pointers, so stack unwinding can
> be done using frame pointers.
> 
> 
> Future work: Support module cache for arm 64.
> 
> BUG=1110044
> 
> Change-Id: If98bcc5582edc75b61c5a385cd29535f4a6ee195
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2321230
> Commit-Queue: ssid <ssid@chromium.org>
> Reviewed-by: Mike Wittman <wittman@chromium.org>
> Reviewed-by: Nico Weber <thakis@chromium.org>
> Reviewed-by: oysteine <oysteine@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#805274}

TBR=thakis@chromium.org,wittman@chromium.org,oysteine@chromium.org,ssid@chromium.org

Change-Id: Ib9b2d1563951937e22b4299b44bdeec21e2c014f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1110044
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2401799Reviewed-by: Haiyang Pan <hypan@google.com>
Commit-Queue: Haiyang Pan <hypan@google.com>
Cr-Commit-Position: refs/heads/master@{#805367}