views: Convert IsEnabled() to just enabled() since it's just a simple accessor.

ui/views/controls/combobox/native_combobox_views.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/combobox/native_combobox_views.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/utf_string_conversions.h"
@@ skipping 172 matching lines @@
 
   content_width_ = max_width;
   content_height_ = font.GetFontSize();
 }
 
 void NativeComboboxViews::UpdateSelectedItem() {
   selected_item_ = combobox_->selected_item();
 }
 
 void NativeComboboxViews::UpdateEnabled() {
-  SetEnabled(combobox_->IsEnabled());
+  SetEnabled(combobox_->enabled());
 }
 
 int NativeComboboxViews::GetSelectedItem() const {
   return selected_item_;
 }
 
 bool NativeComboboxViews::IsDropdownOpen() const {
   return dropdown_open_;
 }
 
@@ skipping 173 matching lines @@
 
 #if defined(USE_AURA)
 // static
 NativeComboboxWrapper* NativeComboboxWrapper::CreateWrapper(
     Combobox* combobox) {
   return new NativeComboboxViews(combobox);
 }
 #endif
 
 }  // namespace views