Adds MD ink ripple animations to buttons within location bar

ui/views/controls/image_view.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_IMAGE_VIEW_H_
 #define UI_VIEWS_CONTROLS_IMAGE_VIEW_H_
 
 #include "base/macros.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/image/image_skia.h"
@@ skipping 32 matching lines @@
   ~ImageView() override;
 
   // Set the image that should be displayed.
   void SetImage(const gfx::ImageSkia& img);
 
   // Set the image that should be displayed from a pointer. Reset the image
   // if the pointer is NULL. The pointer contents is copied in the receiver's
   // image.
   void SetImage(const gfx::ImageSkia* image_skia);
 
-  // Returns the image currently displayed or NULL of none is currently set.
+  // Returns the image currently displayed, which can be empty if not set.
   // The returned image is still owned by the ImageView.
-  const gfx::ImageSkia& GetImage();
+  const gfx::ImageSkia& GetImage() const;
 
   // Set the desired image size for the receiving ImageView.
   void SetImageSize(const gfx::Size& image_size);
 
   // Returns the actual bounds of the visible image inside the view.
   gfx::Rect GetImageBounds() const;
 
   // Reset the image size to the current image dimensions.
   void ResetImageSize();
 
@@ skipping 68 matching lines @@
   void* last_painted_bitmap_pixels_;
 
   scoped_ptr<views::Painter> focus_painter_;
 
   DISALLOW_COPY_AND_ASSIGN(ImageView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_IMAGE_VIEW_H_