GrResourceCache2 manages scratch texture.

src/core/SkBitmapProcShader.cpp

Index: src/core/SkBitmapProcShader.cpp
diff --git a/src/core/SkBitmapProcShader.cpp b/src/core/SkBitmapProcShader.cpp
index 9c900d35f85ae5e30f734e2927321d32676e82bf..a9798b8e24c3d4e816eac484b561ae3d00ef7e67 100644
--- a/src/core/SkBitmapProcShader.cpp
+++ b/src/core/SkBitmapProcShader.cpp
@@ -459,9 +459,9 @@ bool SkBitmapProcShader::asFragmentProcessor(GrContext* context, const SkPaint&
 
     }
     GrTextureParams params(tm, textureFilterMode);
-    GrTexture* texture = GrLockAndRefCachedBitmapTexture(context, fRawBitmap, &params);
+    SkAutoTUnref<GrTexture> texture(GrRefCachedBitmapTexture(context, fRawBitmap, &params));
 
-    if (NULL == texture) {
+    if (!texture) {
         SkErrorInternals::SetError( kInternalError_SkError,
                                     "Couldn't convert bitmap to texture.");
         return false;
@@ -476,7 +476,6 @@ bool SkBitmapProcShader::asFragmentProcessor(GrContext* context, const SkPaint&
     } else {
         *fp = GrSimpleTextureEffect::Create(texture, matrix, params);
     }
-    GrUnlockAndUnrefCachedBitmapTexture(texture);
 
     return true;
 }