Media Galleries: Implement chrome.mediaGalleries.getAllMediaFileSystemMetadata().

BUG=318408

Review URL: https://codereview.chromium.org/77163004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237265 0039d316-1c4b-4281-b951-d872f2087c98
Add back AutofillType::server_type() to fix input filling issues on
requestAutocomplete() dialog.

BUG=321887
R=isherman@chromium.org

Review URL: https://codereview.chromium.org/81853003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237266 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237265
Enable HTML frame and Transparency by channel, not experimental flag.

BUG=322834

Review URL: https://codereview.chromium.org/84253004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237267 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237267
SIMD optimizations of exp weighted moving average computation in AudioPowerMonitor.

Benchmark tests show a 445% speed-up using the SSE implementation over the original code in AudioPowerMonitor::Scan().  Also worth noting: A minor change to the non-SIMD code allowed a 30% speed-up over the original!

TEST=media_unittests; and manually confirmed tab audio indicator still works properly

Review URL: https://codereview.chromium.org/84563002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237268 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237268