Move cocoa_test_event_utils.* to ui/events/test/
    
For now it is only possible to move these event files from ui/base to
    ui/events, because otherwise a circular dep will arise between ui.gyp ->
    events.gyp and ui_unittests.gyp
    
BUG=299841
TEST=None
R=sadrul@chromium.org,thakis@chromium.org
TBR=ben

Review URL: https://codereview.chromium.org/140123007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@248999 0039d316-1c4b-4281-b951-d872f2087c98
WebRTC browser tests will now render during tests.

This is a speculative fix to try to fix the video quality test timeouts
on the FYI bots. I noticed the browser tests did not run with pixel
output enabled, which means they don't really render. Not sure how it
is related to the gUM failures in the bug, but this will at least make
it easier to see what's going on when it fails.

R=xians@chromium.org
BUG=340609
NOTRY=True

Review URL: https://codereview.chromium.org/153623005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249000 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 249000