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If an adb command fails during profiling, dump logcat through
logging.error. This will aid with debugging.

Bug: 898979
Change-Id: I4178579e2e69d5d43eb2b12b8eafad1c8038396f
Reviewed-on: https://chromium-review.googlesource.com/c/1317916Reviewed-by: Egor Pasko <pasko@chromium.org>
Reviewed-by: Matthew Cary <mattcary@chromium.org>
Commit-Queue: Matthew Cary <mattcary@chromium.org>
Cr-Commit-Position: refs/heads/master@{#605474}