MacViews: Implement Full Keyboard Access.

ui/views/controls/button/button.cc

 // Copyright (c) 2011 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/button.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "ui/accessibility/ax_view_state.h"
 
 namespace views {
@@ skipping 46 matching lines @@
   state->role = ui::AX_ROLE_BUTTON;
   state->name = accessible_name_;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // Button, protected:
 
 Button::Button(ButtonListener* listener)
     : listener_(listener),
       tag_(-1) {
-  SetAccessibilityFocusable(true);
+  SetFocusBehavior(ACCESSIBLE_ONLY);
 }
 
 void Button::NotifyClick(const ui::Event& event) {
   // We can be called when there is no listener, in cases like double clicks on
   // menu buttons etc.
   if (listener_)
     listener_->ButtonPressed(this, event);
 }
 
 void Button::OnClickCanceled(const ui::Event& event) {}
 
 }  // namespace views