Add support for reposting the ET_GESTURE_TAP_DOWN gesture event to the RootWindow and in the

ui/views/controls/menu/menu_controller.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/controls/menu/menu_controller.h"
 
 #if defined(OS_WIN)
 #include <windowsx.h>
 #endif
 
@@ skipping 2106 matching lines @@
       event_type = 0;  // Unknown mouse press.
 
     if (event_type) {
       if (in_client_area) {
         PostMessage(window, event_type, event.native_event().wParam,
                     MAKELPARAM(window_x, window_y));
       } else {
         PostMessage(window, event_type, nc_hit_result,
                     MAKELPARAM(screen_loc.x(), screen_loc.y()));
       }
+    } else if (event.type() == ui::ET_GESTURE_TAP_DOWN) {
+#if defined(USE_AURA)
+      // Gesture events need to be posted to the target root window. In
+      // desktop chrome there could be multiple root windows.
+      aura::RootWindow* target_root =
+          aura::RootWindow::GetForAcceleratedWidget(window);
+      if (target_root)
+        target_root->RepostEvent(event);
+#endif
     }
   }
 }
 #elif defined(USE_AURA)
 void MenuController::RepostEvent(SubmenuView* source,
                                  const ui::LocatedEvent& event) {
   aura::RootWindow* root_window =
       source->GetWidget()->GetNativeWindow()->GetRootWindow();
   DCHECK(root_window);
   root_window->RepostEvent(event);
@@ skipping 152 matching lines @@
              (!pending_state_.item->HasSubmenu() ||
               !pending_state_.item->GetSubmenu()->IsShowing())) {
     // On exit if the user hasn't selected an item with a submenu, move the
     // selection back to the parent menu item.
     SetSelection(pending_state_.item->GetParentMenuItem(),
                  SELECTION_OPEN_SUBMENU);
   }
 }
 
 }  // namespace views