Add touch gestures to views menu controls.

ui/views/controls/menu/menu_controller.cc

Index: ui/views/controls/menu/menu_controller.cc
diff --git a/ui/views/controls/menu/menu_controller.cc b/ui/views/controls/menu/menu_controller.cc
index ce1adc2714da2f8e2b1693ec22f46bd0a3cbcd93..9109602e247e3052a7c94130ee15fe2c9430f40f 100644
--- a/ui/views/controls/menu/menu_controller.cc
+++ b/ui/views/controls/menu/menu_controller.cc
@@ -543,6 +543,14 @@ ui::GestureStatus MenuController::OnGestureEvent(SubmenuView* source,
   } else if (event.type() == ui::ET_GESTURE_LONG_PRESS && possible_drag_) {
     StartDrag(source, event.location());
     return ui::GESTURE_STATUS_CONSUMED;
+  } else if (event.type() == ui::ET_GESTURE_TAP) {

[sadrul, 2012/06/11 16:00:37]

I think if something (e.g. a button) causes the menu to show up on TAP_DOWN,
then this menu may need to ignore the first TAP gesture (like it has logic for
ignoring first mouse-release). But since that is not the case currently, this
will work OK. This is just to point out that we may need to revisit this part of
the code later.

+    if (pending_state_.item) {
+      if (pending_state_.item->HasSubmenu())
+        OpenSubmenuChangeSelectionIfCan();
+      else if (pending_state_.item->enabled())
+        Accept(pending_state_.item, 0);
+      return ui::GESTURE_STATUS_CONSUMED;
+    }
   }
   MenuPart part = GetMenuPart(source, event.location());
   if (!part.submenu)