Add touch gestures to views menu controls.

ui/views/controls/button/custom_button.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/button/custom_button.h"
 
 #include "ui/base/accessibility/accessible_view_state.h"
 #include "ui/base/animation/throb_animation.h"
 #include "ui/base/keycodes/keyboard_codes.h"
 #include "ui/gfx/screen.h"
@@ skipping 177 matching lines @@
   if ((state_ == BS_DISABLED) || (event.key_code() != ui::VKEY_SPACE))
     return false;
 
   SetState(BS_NORMAL);
   NotifyClick(event);
   return true;
 }
 
 ui::GestureStatus CustomButton::OnGestureEvent(const GestureEvent& event) {
   if (state_ == BS_DISABLED)
-    return ui::GESTURE_STATUS_UNKNOWN;
+    return Button::OnGestureEvent(event);
 
   if (event.type() == ui::ET_GESTURE_TAP) {
     // Set the button state to hot and start the animation fully faded in. The
     // TAP_UP event issued immediately after will set the state to BS_NORMAL
     // beginning the fade out animation. See http://crbug.com/131184.
     SetState(BS_HOT);
     hover_animation_->Reset(1.0);
     NotifyClick(event);
     return ui::GESTURE_STATUS_CONSUMED;
   } else if (event.type() == ui::ET_GESTURE_TAP_DOWN) {
@@ skipping 89 matching lines @@
   if (!is_add && state_ != BS_DISABLED)
     SetState(BS_NORMAL);
 }
 
 void CustomButton::OnBlur() {
   if (IsHotTracked())
     SetState(BS_NORMAL);
 }
 
 }  // namespace views