Clean up SkBitmapOperations.

ui/gfx/shadow_value.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_SHADOW_VALUE_
-#define UI_GFX_SHADOW_VALUE_
+#ifndef UI_GFX_SHADOW_VALUE_H_
+#define UI_GFX_SHADOW_VALUE_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/base/ui_export.h"
 #include "ui/gfx/point.h"
 
 namespace gfx {
 
 class Insets;
 
+class ShadowValue;
+typedef std::vector<ShadowValue> ShadowValues;
+
 // ShadowValue encapsulates parameters needed to define a shadow, including the
 // shadow's offset, blur amount and color.
 class UI_EXPORT ShadowValue {
  public:
   ShadowValue();
   ShadowValue(const gfx::Point& offset, double blur, SkColor color);
   ~ShadowValue();
 
   int x() const { return offset_.x(); }
   int y() const { return offset_.y(); }
   const gfx::Point& offset() const { return offset_; }
   double blur() const { return blur_; }
   SkColor color() const { return color_; }
 
   std::string ToString() const;
 
   // Gets margin space needed for shadows. Note that values in returned Insets
   // are negative because shadow margins are outside a boundary.
-  static Insets GetMargin(const std::vector<ShadowValue>& shadows);
+  static Insets GetMargin(const ShadowValues& shadows);
 
  private:
   gfx::Point offset_;
 
   // Blur amount of the shadow in pixels. If underlying implementation supports
   // (e.g. Skia), it can have fraction part such as 0.5 pixel. The value
   // defines a range from full shadow color at the start point inside the
   // shadow to fully transparent at the end point outside it. The range is
   // perpendicular to and centered on the shadow edge. For example, a blur
   // amount of 4.0 means to have a blurry shadow edge of 4 pixels that
   // transitions from full shadow color to fully transparent and with 2 pixels
   // inside the shadow and 2 pixels goes beyond the edge.
   double blur_;
 
   SkColor color_;
 };
 
 }  // namespace gfx
 
-#endif  // UI_GFX_SHADOW_VALUE_
+#endif  // UI_GFX_SHADOW_VALUE_H_