Removing GitDefaultProfile occurences from the remaining WebUI areas (mobile & test)

BUG=322682
TEST=covered by existing unit tests

Review URL: https://codereview.chromium.org/113653004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243468 0039d316-1c4b-4281-b951-d872f2087c98
[telemetry] Implement per-pixel algorithms in Bitmap as a C++ extension.

The extension provides fast bitmap operations with no external
dependencies. However, it is not available on all platforms.

BUG=323813
TEST=telemetry bitmap_unittest
R=bulach@chromium.org, tonyg@chromium.org

Review URL: https://codereview.chromium.org/121493004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243469 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 243469
Media Galleries API Metadata: Add audio video metadata extractor.

This CL adds a class for extraction of audio and video metadata using ffmpeg.

This is needed to implement the Media Galleries Metadata API for Chrome extensions.

BUG=318450

Review URL: https://codereview.chromium.org/121383002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243470 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 243470