Android: moves ui/ to use long for JNI.

BUG=

Review URL: https://codereview.chromium.org/61733010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@234312 0039d316-1c4b-4281-b951-d872f2087c98
roll ffmpeg to 234251/0889dce

TBR=dalecurtis@chromium.org
BUG=315109,309197

Review URL: https://codereview.chromium.org/66303008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@234313 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 234312
[Telemetry] Shortcut browser finding when an explicit --browser is given.

Browser finding on cros and android takes a little bit of time. If we are
given a --browser, there's no need to do it.

BUG=

Review URL: https://codereview.chromium.org/67953003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@234314 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 234314