Telemetry: Add fast-path benchmark.

Adding a benchmark to measure fast-path performance. This just
filters a couple accelerated scrolling pages.

BUG=321439

Review URL: https://codereview.chromium.org/109203005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241184 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241184
Remove empty directory

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241185 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241185
Whitelist activity log API to Chrome Apps Developer Tools.

BUG=327851

Review URL: https://codereview.chromium.org/108103005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241186 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241186