Add VP9 encode support to the remoting host.

BUG=260879

Review URL: https://codereview.chromium.org/28183002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255208 0039d316-1c4b-4281-b951-d872f2087c98
Fix typo in Blacklist.Blocked Histogram

BUG=

Review URL: https://codereview.chromium.org/187593003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255209 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255209
MTP Streaming: Readahead Buffer

BUG=110119

Review URL: https://codereview.chromium.org/178473022

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255210 0039d316-1c4b-4281-b951-d872f2087c98
Activate browser window when opening new tab from a packaged app window.

BUG=345598

Review URL: https://codereview.chromium.org/187653006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255212 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255212