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The StackSamplingProfiler has been observed to cause crashes when
running under Application Verifier, a Windows utility used to detect
subtle programming errors. Samples collected by the
StackSamplingProfiler while Application Verifier is running are unlikely
to hold any value, as Application Verifier slows down execution
significantly.

Because StackSamplingProfiler and Application Verifier are not
compatible, this change detects whether Application Verifier is running,
and does not start up StackSamplingProfiler if so.

This is not expected to impact data collection, as Application Verifier
is used only by a few developers.

Bug: 1004989
Change-Id: I014b3cee440e99d832ae8d84a03fe70777676a2b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1783735
Commit-Queue: Jesse McKenna <jessemckenna@google.com>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Mike Wittman <wittman@chromium.org>
Reviewed-by: Bruce Dawson <brucedawson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#700356}