Enable per-monitor DPI Awareness for Me2Me and It2me native messaging.

The "true/pm" value is processed correctly on Win8.1 (per-monitor aware), and on previous versions (system dpi aware).
See http://msdn.microsoft.com/en-us/library/windows/desktop/dn469266(v=vs.85).aspx#supporting_dynamic_dpi_changes for details.

BUG=329343

Review URL: https://codereview.chromium.org/147993008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249337 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 249337
Chromoting client: video renderer based on MediaSource API.

The new render is not enabled yet by default, but can be enabled using
remoting.settings.USE_MEDIA_SOURCE_RENDERING flag in the webapp.

BUG=321825

Review URL: https://codereview.chromium.org/134163005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249338 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 249338