Roll to Android SDK 19 and build-tools 19.0.0.

BUG=317754

Review URL: https://codereview.chromium.org/63153014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235122 0039d316-1c4b-4281-b951-d872f2087c98
Fix WebRTC logging so that logs from libpeerconnection make it to the log.

BUG=319166

Review URL: https://codereview.chromium.org/71353010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235123 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235123