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

ui/views/controls/combobox/native_combobox_win.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_win.h"
 
 #include "base/i18n/rtl.h"
 #include "base/utf_string_conversions.h"
 #include "ui/base/models/combobox_model.h"
 #include "ui/base/resource/resource_bundle.h"
@@ skipping 68 matching lines @@
   // Note that we use CB_SETCURSEL and not CB_SELECTSTRING because on RTL
   // locales the strings we get from our ComboBox::Model might be augmented
   // with Unicode directionality marks before we insert them into the combo box
   // and therefore we can not assume that the string we get from
   // ComboBox::Model can be safely searched for and selected (which is what
   // CB_SELECTSTRING does).
   SendMessage(native_view(), CB_SETCURSEL, combobox_->selected_item(), 0);
 }
 
 void NativeComboboxWin::UpdateEnabled() {
-  SetEnabled(combobox_->IsEnabled());
+  SetEnabled(combobox_->enabled());
 }
 
 int NativeComboboxWin::GetSelectedItem() const {
   LRESULT selected_item = SendMessage(native_view(), CB_GETCURSEL, 0, 0);
   return selected_item != CB_ERR ? selected_item : -1;
 }
 
 bool NativeComboboxWin::IsDropdownOpen() const {
   return SendMessage(native_view(), CB_GETDROPPEDSTATE, 0, 0) != 0;
 }
@@ skipping 106 matching lines @@
 
 // static
 NativeComboboxWrapper* NativeComboboxWrapper::CreateWrapper(
     Combobox* combobox) {
   if (Widget::IsPureViews())
     return new NativeComboboxViews(combobox);
   return new NativeComboboxWin(combobox);
 }
 
 }  // namespace views