GitLab

Update actions_in_current_group when removing an action so that it doesn't crash
afterwards.

BUG=61607,62609
TEST=manual (see bug)

Do not set text if it didn't change, because it registers a delete/insert undo-able action-couple.

Review URL: http://codereview.chromium.org/4683002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@65609 0039d316-1c4b-4281-b951-d872f2087c98