[Mac] Don't close the Wrench menu after using the zoom buttons if the menu was opened sticky.
This runs the Task that updates the zoom information in the UI thread outside of the
normal MessageLoop and instead runs it on the native run loop.
R=mark
BUG=48679
TEST=Open Wrench menu with a click. Use zoom buttons. Menu stays open and page zooms. Other buttons still close menu.
TEST=Open Wrench menu with click-hold-drag. Hover and release on zoom buttons. Menu closes and page zooms.
Review URL: http://codereview.chromium.org/3183013
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@56566 0039d316-1c4b-4281-b951-d872f2087c98
11 files changed
