MacViews: Make buttons not request focus on mouse press.

ui/views/controls/button/custom_button.h

 // 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.
 
 #ifndef UI_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_
 #define UI_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_
 
 #include <memory>
 
 #include "base/macros.h"
+#include "build/build_config.h"
 #include "ui/events/event_constants.h"
 #include "ui/gfx/animation/animation_delegate.h"
 #include "ui/gfx/animation/throb_animation.h"
 #include "ui/views/animation/ink_drop_state.h"
 #include "ui/views/controls/button/button.h"
 
 namespace views {
 
 class InkDropDelegate;
 
@@ skipping 34 matching lines @@
   void SetAnimationDuration(int duration);
 
   void set_triggerable_event_flags(int triggerable_event_flags) {
     triggerable_event_flags_ = triggerable_event_flags;
   }
   int triggerable_event_flags() const { return triggerable_event_flags_; }
 
   // Sets whether |RequestFocus| should be invoked on a mouse press. The default
   // is false.
   void set_request_focus_on_press(bool value) {
+// On Mac, buttons should not request focus on a mouse press. Hence keep the
+// default value i.e. false.
+#if !defined(OS_MACOSX)
     request_focus_on_press_ = value;
+#endif
   }
+
   bool request_focus_on_press() const { return request_focus_on_press_; }
 
   // See description above field.
   void set_animate_on_state_change(bool value) {
     animate_on_state_change_ = value;
   }
 
   // Sets the event on which the button should notify its listener.
   void set_notify_action(NotifyAction notify_action) {
     notify_action_ = notify_action;
@@ skipping 137 matching lines @@
   // because it needs to paint to a layer so it can extend beyond the bounds of
   // |this|.
   views::View* md_focus_ring_;
 
   DISALLOW_COPY_AND_ASSIGN(CustomButton);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_