cc: Move SkShader construction to a single spot in PaintShader

third_party/WebKit/Source/platform/graphics/Pattern.h

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2007-2008 Torch Mobile, Inc.
  * Copyright (C) 2013 Google, Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
@@ skipping 54 matching lines @@
 
   void ApplyToFlags(PaintFlags&, const SkMatrix&);
 
   bool IsRepeatX() const { return repeat_mode_ & kRepeatModeX; }
   bool IsRepeatY() const { return repeat_mode_ & kRepeatModeY; }
   bool IsRepeatXY() const { return repeat_mode_ == kRepeatModeXY; }
 
   virtual bool IsTextureBacked() const { return false; }
 
  protected:
-  virtual sk_sp<PaintShader> CreateShader(const SkMatrix&) = 0;
+  virtual std::unique_ptr<PaintShader> CreateShader(const SkMatrix&) = 0;
   virtual bool IsLocalMatrixChanged(const SkMatrix&) const;
 
   RepeatMode repeat_mode_;
 
   Pattern(RepeatMode);
-  mutable sk_sp<PaintShader> cached_shader_;
+  mutable std::unique_ptr<PaintShader> cached_shader_;
 };
 
 }  // namespace blink
 
 #endif