Android: start upstreaming some of our perf tests.

- fix some "forwarder" issues on chrome_remote_control.
- adds a "platform" interface to crc so that tests can grab stats from
the platform, where possible.
- integrates "surface stats collector" with scrolling tests.

BUG=155678,11187036,138479
TEST=./tools/perf/run_tests --browser=android-chrome testScrolling

Review URL: https://chromiumcodereview.appspot.com/11187036

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@163361 0039d316-1c4b-4281-b951-d872f2087c98
8 files changed