Fixes for -Wunused-function on Linux, Android and ChromeOS

ui/views/controls/menu/menu_image_util.cc

 // 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.
 
 #include "ui/views/controls/menu/menu_image_util.h"
 
 #include "base/i18n/rtl.h"
 #include "base/logging.h"
 #include "grit/ui_resources.h"
 #include "third_party/skia/include/effects/SkGradientShader.h"
@@ skipping 80 matching lines @@
                                       kSelectedIndicatorSize / 2, paint);
     }
   }
 
  private:
   bool selected_;
 
   DISALLOW_COPY_AND_ASSIGN(RadioButtonImageSource);
 };
 
-gfx::ImageSkia* CreateRadioButtonImage(bool selected) {
-  RadioButtonImageSource* source = new RadioButtonImageSource(selected);
-  return new gfx::ImageSkia(source, source->size());
-}
-
 class SubmenuArrowImageSource : public gfx::CanvasImageSource {
  public:
   SubmenuArrowImageSource(int image_id)
       : gfx::CanvasImageSource(ui::ResourceBundle::GetSharedInstance().
             GetImageNamed(image_id).ToImageSkia()->size(), false),
         image_id_(image_id) {}
   virtual ~SubmenuArrowImageSource() {}
 
   virtual void Draw(gfx::Canvas* canvas) OVERRIDE {
     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
@@ skipping 50 matching lines @@
   int image_id = selected ? IDR_MENU_RADIO_SELECTED : IDR_MENU_RADIO_EMPTY;
   return ui::ResourceBundle::GetSharedInstance().GetImageNamed(image_id).
       AsImageSkia();
 }
 
 gfx::ImageSkia GetSubmenuArrowImage(bool dark_background) {
   return GetRtlSubmenuArrowImage(base::i18n::IsRTL(), dark_background);
 }
 
 }  // namespace views