Remove uses of GrAutoScratchTexture.

include/gpu/GrRenderTarget.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrRenderTarget_DEFINED
 #define GrRenderTarget_DEFINED
 
@@ skipping 31 matching lines @@
     virtual const GrRenderTarget* asRenderTarget() const  SK_OVERRIDE {
         return this;
     }
 
     virtual bool readPixels(int left, int top, int width, int height,
                             GrPixelConfig config,
                             void* buffer,
                             size_t rowBytes = 0,
                             uint32_t pixelOpsFlags = 0) SK_OVERRIDE;
 
-    virtual void writePixels(int left, int top, int width, int height,
+    virtual bool writePixels(int left, int top, int width, int height,
                              GrPixelConfig config,
                              const void* buffer,
                              size_t rowBytes = 0,
                              uint32_t pixelOpsFlags = 0) SK_OVERRIDE;
 
     // GrRenderTarget
     /**
      * If this RT is multisampled, this is the multisample buffer
      * @return the 3D API's handle to this object (e.g. FBO ID in OpenGL)
      */
@@ skipping 105 matching lines @@
 
     GrStencilBuffer*  fStencilBuffer;
     GrTexture*        fTexture; // not ref'ed
 
     SkIRect           fResolveRect;
 
     typedef GrSurface INHERITED;
 };
 
 #endif