Media Galleries: chrome.mediaGalleries.addUserSelectedFolder() requires a user gesture.  

BUG=318411

Review URL: https://codereview.chromium.org/134993002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244420 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 244420
Allow disabled tests on cros to be run with -d flag.

BUG=331940
TEST=manual

Review URL: https://codereview.chromium.org/134623006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244421 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 244421