views: Convert IsFocusable() to just focusable() since it's just a simple accessor.

chrome/browser/chromeos/views/dropdown_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 "chrome/browser/chromeos/views/dropdown_button.h"
 
 #include "grit/theme_resources.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/canvas_skia.h"
 
@@ skipping 53 matching lines @@
                                views::ViewMenuDelegate* menu_delegate,
                                bool show_menu_marker)
     : MenuButton(listener, text, menu_delegate, show_menu_marker) {
   set_border(new DropDownButtonBorder);
 }
 
 DropDownButton::~DropDownButton() {
 }
 
 void DropDownButton::OnPaintFocusBorder(gfx::Canvas* canvas) {
-  if (HasFocus() && (IsFocusable() || IsAccessibilityFocusableInRootView())) {
+  if (HasFocus() && (focusable() || IsAccessibilityFocusableInRootView())) {
     canvas->DrawFocusRect(gfx::Rect(kFocusFrameLeftOffset, kFocusFrameTopOffset,
                                     width() - kFocusFrameRightOffset,
                                     height() - kFocusFrameBottomOffset));
   }
 }
 
 void DropDownButton::SetText(const string16& text) {
   text_ = text;
   UpdateTextSize();
 }
 
 string16 DropDownButton::GetAccessibleValue() {
   return text_;
 }
 
 }  // namespace chromeos