views: Mark a tap-down as handled only if scrolling was actually stopped.

BUG=168005

Review URL: https://codereview.chromium.org/11740006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@175372 0039d316-1c4b-4281-b951-d872f2087c98

ui/views/controls/menu/submenu_view.cc

@@ -281,7 +281,10 @@ void SubmenuView::OnGestureEvent(ui::GestureEvent* event) {
       break;
     case ui::ET_GESTURE_TAP_DOWN:
     case ui::ET_SCROLL_FLING_CANCEL:
-      scroll_animator_->Stop();
+      if (scroll_animator_->is_scrolling())
+        scroll_animator_->Stop();
+      else
+        handled = false;
       break;
     default:
       handled = false;