Remove uses of GrAutoScratchTexture.

src/effects/SkAlphaThresholdFilter.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkAlphaThresholdFilter.h"
 #include "SkBitmap.h"
 #include "SkReadBuffer.h"
@@ skipping 267 matching lines @@
         if (context->isConfigRenderable(kAlpha_8_GrPixelConfig, false)) {
             maskDesc.fConfig = kAlpha_8_GrPixelConfig;
         } else {
             maskDesc.fConfig = kRGBA_8888_GrPixelConfig;
         }
         maskDesc.fFlags = kRenderTarget_GrTextureFlagBit | kNoStencil_GrTextureFlagBit;
         // Add one pixel of border to ensure that clamp mode will be all zeros
         // the outside.
         maskDesc.fWidth = texture->width();
         maskDesc.fHeight = texture->height();
-        GrAutoScratchTexture ast(context, maskDesc, GrContext::kApprox_ScratchTexMatch);
-        GrTexture*  maskTexture = ast.texture();
-        if (NULL == maskTexture) {
+        SkAutoTUnref<GrTexture> maskTexture(
+            context->refScratchTexture(maskDesc, GrContext::kApprox_ScratchTexMatch));
+        if (!maskTexture) {
             return false;
         }
 
         {
-            GrContext::AutoRenderTarget art(context, ast.texture()->asRenderTarget());
+            GrContext::AutoRenderTarget art(context, maskTexture->asRenderTarget());
             GrPaint grPaint;
             grPaint.setBlendFunc(kOne_GrBlendCoeff, kZero_GrBlendCoeff);
             SkRegion::Iterator iter(fRegion);
             context->clear(NULL, 0x0, true);
 
             SkMatrix old_matrix = context->getMatrix();
             context->setMatrix(in_matrix);
 
             while (!iter.done()) {
                 SkRect rect = SkRect::Make(iter.rect());
@@ skipping 73 matching lines @@
                                                   (U8CPU)(SkColorGetG(source) * scale),
                                                   (U8CPU)(SkColorGetB(source) * scale));
                 }
             }
             dptr[y * dst->width() + x] = output_color;
         }
     }
 
     return true;
 }