Remove uses of GrAutoScratchTexture.

src/core/SkImageFilter.cpp

Index: src/core/SkImageFilter.cpp
diff --git a/src/core/SkImageFilter.cpp b/src/core/SkImageFilter.cpp
index 6f7762ac466d68e010caedd3c7b97a350e3b71eb..79215491681dc282d0af83d156a2e300f5234a97 100644
--- a/src/core/SkImageFilter.cpp
+++ b/src/core/SkImageFilter.cpp
@@ -255,13 +255,14 @@ bool SkImageFilter::filterImageGPU(Proxy* proxy, const SkBitmap& src, const Cont
     desc.fHeight = bounds.height();
     desc.fConfig = kRGBA_8888_GrPixelConfig;
 
-    GrAutoScratchTexture dst(context, desc);
-    if (NULL == dst.texture()) {
+    SkAutoTUnref<GrTexture> dst(
+        context->refScratchTexture(desc, GrContext::kApprox_ScratchTexMatch));
+    if (!dst) {
         return false;
     }
     GrContext::AutoMatrix am;
     am.setIdentity(context);
-    GrContext::AutoRenderTarget art(context, dst.texture()->asRenderTarget());
+    GrContext::AutoRenderTarget art(context, dst->asRenderTarget());
     GrContext::AutoClip acs(context, dstRect);
     GrFragmentProcessor* fp;
     offset->fX = bounds.left();
@@ -275,8 +276,7 @@ bool SkImageFilter::filterImageGPU(Proxy* proxy, const SkBitmap& src, const Cont
     paint.addColorProcessor(fp)->unref();
     context->drawRectToRect(paint, dstRect, srcRect);
 
-    SkAutoTUnref<GrTexture> resultTex(dst.detach());
-    WrapTexture(resultTex, bounds.width(), bounds.height(), result);
+    WrapTexture(dst, bounds.width(), bounds.height(), result);
     return true;
 #else
     return false;