Implement remaining SkBitmapOperations as ImageSkiaOperations

ui/views/controls/button/image_button.h

 // 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.
 
 #ifndef UI_VIEWS_CONTROLS_BUTTON_IMAGE_BUTTON_H_
 #define UI_VIEWS_CONTROLS_BUTTON_IMAGE_BUTTON_H_
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/gfx/image/image_skia.h"
@@ skipping 46 matching lines @@
 
   // Sets preferred size, so it could be correctly positioned in layout even if
   // it is NULL.
   void SetPreferredSize(const gfx::Size& preferred_size) {
     preferred_size_ = preferred_size;
   }
 
  protected:
   // Returns the image to paint. This is invoked from paint and returns a value
   // from images.
-  // |scale_factor| is the scale factor at which the view is painted and the
-  // scale factor which should be used when mutating ImageSkias.
-  virtual gfx::ImageSkia GetImageToPaint(ui::ScaleFactor scale_factor);
+  virtual gfx::ImageSkia GetImageToPaint();
 
   // Updates button background for |scale_factor|.
   void UpdateButtonBackground(ui::ScaleFactor scale_factor);
 
   // The images used to render the different states of this button.
   gfx::ImageSkia images_[BS_COUNT];
 
-  // Information necessary to generate background image.
-  struct BackgroundImageGenerationInfo {
-    BackgroundImageGenerationInfo();
-    ~BackgroundImageGenerationInfo();
-
-    SkColor src_color_;
-    gfx::ImageSkia src_image_;
-    gfx::ImageSkia src_mask_;
-    gfx::ImageSkia result_;
-  };
-  BackgroundImageGenerationInfo background_image_;
+  gfx::ImageSkia background_image_;
 
   // Image to draw on top of normal / hot / pushed image.  Usually empty.
   gfx::ImageSkia overlay_image_;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(ImageButtonTest, Basics);
 
   // Image alignment.
   HorizontalAlignment h_alignment_;
   VerticalAlignment v_alignment_;
@@ skipping 45 matching lines @@
   // The parent class's tooltip_text_ is displayed when not toggled, and
   // this one is shown when toggled.
   string16 toggled_tooltip_text_;
 
   DISALLOW_COPY_AND_ASSIGN(ToggleImageButton);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_BUTTON_IMAGE_BUTTON_H_