ui: Cleanup class/struct forward declarations

ui/gfx/skbitmap_operations.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_GFX_SKBITMAP_OPERATIONS_H_
 #define UI_GFX_SKBITMAP_OPERATIONS_H_
 
 #include "base/gtest_prod_util.h"
 #include "ui/gfx/color_utils.h"
 #include "ui/gfx/gfx_export.h"
 #include "ui/gfx/shadow_value.h"
 
-namespace gfx {
-class Point;
-class Size;
-}
-
 class SkBitmap;
 
 class GFX_EXPORT SkBitmapOperations {
  public:
   // Enum for use in rotating images (must be in 90 degree increments),
   // see: Rotate.
   enum RotationAmount {
     ROTATION_90_CW,
     ROTATION_180_CW,
     ROTATION_270_CW,
@@ skipping 87 matching lines @@
   static SkBitmap Rotate(const SkBitmap& source, RotationAmount rotation);
 
  private:
   SkBitmapOperations();  // Class for scoping only.
 
   FRIEND_TEST_ALL_PREFIXES(SkBitmapOperationsTest, DownsampleByTwo);
   FRIEND_TEST_ALL_PREFIXES(SkBitmapOperationsTest, DownsampleByTwoSmall);
 };
 
 #endif  // UI_GFX_SKBITMAP_OPERATIONS_H_