Android / telemetry: set debug app.

Set the debug app for user build devices programatically.
This allows running some telemetry benchmarks without any intervention.

BUG=334007
TEST=tools/perf/run_benchmark -vvvv --browser=android-chrome --show-stdout octane

Review URL: https://codereview.chromium.org/138093002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245158 0039d316-1c4b-4281-b951-d872f2087c98
Fix compilation of build_utf8_validator_tables  on Win64.

BUG=334878

TBR=jshin@chromium.org

Review URL: https://codereview.chromium.org/138143013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245159 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 245158
SVN changes up to revision 245159