Code:  bool LauncherView::IsShowingMenu() const {
 #if !defined(OS_MACOSX)
  return (overflow_menu_runner_.get() &&
          overflow_menu_runner_->IsRunning()) ||
      (launcher_menu_runner_.get() &&
        launcher_menu_runner_->IsRunning());
 #endif
   return false;
 }

Commit Message: ash: Add launcher overflow bubble.

- Host a LauncherView in bubble to display overflown items;
- Mouse wheel and two-finger scroll to scroll the LauncherView in bubble in case overflow bubble is overflown;
- Fit bubble when items are added/removed;
- Keep launcher bar on screen when the bubble is shown;

BUG=128054
TEST=Verify launcher overflown items are in a bubble instead of menu.


Review URL: https://chromiumcodereview.appspot.com/10659003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@146460 0039d316-1c4b-4281-b951-d872f2087c98
CWE ID: CWE-119
 bool LauncherView::IsShowingMenu() const {
 #if !defined(OS_MACOSX)
  return (launcher_menu_runner_.get() &&
        launcher_menu_runner_->IsRunning());
 #endif
   return false;
 }
