GitLab

I've done some generalizing of the code and added the bits to show the new
UI designs. Also fixed some bugs. Gone is the idea of 'compact' toast and now
we just specify the flags we want.

BUG=129499
TEST=see bug
Review URL: https://chromiumcodereview.appspot.com/10821007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@149257 0039d316-1c4b-4281-b951-d872f2087c98