Remove uses of GrAutoScratchTexture.

tests/ReadPixelsTest.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmapDevice.h"
 #include "SkCanvas.h"
 #include "SkColorPriv.h"
@@ skipping 300 matching lines @@
                 GrContext* context = factory->get(type);
                 if (NULL == context) {
                     continue;
                 }
                 GrTextureDesc desc;
                 desc.fFlags = kRenderTarget_GrTextureFlagBit | kNoStencil_GrTextureFlagBit;
                 desc.fWidth = DEV_W;
                 desc.fHeight = DEV_H;
                 desc.fConfig = kSkia8888_GrPixelConfig;
                 desc.fOrigin = 1 == dtype ? kBottomLeft_GrSurfaceOrigin : kTopLeft_GrSurfaceOrigin;
-                GrAutoScratchTexture ast(context, desc, GrContext::kExact_ScratchTexMatch);
-                SkAutoTUnref<GrTexture> tex(ast.detach());
-                surface.reset(SkSurface::NewRenderTargetDirect(tex->asRenderTarget()));
+                SkAutoTUnref<GrTexture> texture(
+                    context->refScratchTexture(desc, GrContext::kExact_ScratchTexMatch));
+                surface.reset(SkSurface::NewRenderTargetDirect(texture->asRenderTarget()));
 #else
                 continue;
 #endif
             }
             SkCanvas& canvas = *surface->getCanvas();
             fillCanvas(&canvas);
 
             static const struct {
                 SkColorType fColorType;
                 SkAlphaType fAlphaType;
@@ skipping 50 matching lines @@
                         checkRead(reporter, wkbmp, clippedRect.fLeft,
                                   clippedRect.fTop, true, false);
                     } else {
                         REPORTER_ASSERT(reporter, !success);
                     }
                 }
             }
         }
     }
 }