adb_profile_chrome: Check in perf-to-tracing conversion script
Check in perf-to-tracing conversion script. This lets the --perf command
line switch actually produce trace files that can be loaded by Trace
Viewer.
The conversion script was originally written by Victor Miura
<vmiura@chromium.org> in https://codereview.chromium.org/
296623002/.
TEST=PerfControllerTest
BUG=375754
Review URL: https://codereview.chromium.org/
404543003
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@285022 0039d316-1c4b-4281-b951-d872f2087c98