Notify resource caches when pixelref genID goes stale

src/core/SkPictureShader.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkPictureShader.h"
 
 #include "SkBitmap.h"
@@ skipping 29 matching lines @@
             fLocalMatrixStorage[i] = localMatrix[i];
         }
 
         static const size_t keySize = sizeof(fPictureID) +
                                       sizeof(fTile) +
                                       sizeof(fTmx) + sizeof(fTmy) +
                                       sizeof(fScale) +
                                       sizeof(fLocalMatrixStorage);
         // This better be packed.
         SkASSERT(sizeof(uint32_t) * (&fEndOfStruct - &fPictureID) == keySize);
-        this->init(&gBitmapSkaderKeyNamespaceLabel, keySize);
+        this->init(&gBitmapSkaderKeyNamespaceLabel, 0, keySize);
     }
 
 private:
     uint32_t           fPictureID;
     SkRect             fTile;
     SkShader::TileMode fTmx, fTmy;
     SkSize             fScale;
     SkScalar           fLocalMatrixStorage[9];
 
     SkDEBUGCODE(uint32_t fEndOfStruct;)
@@ skipping 242 matching lines @@
     return bitmapShader->asFragmentProcessor(context, paint, viewM, NULL, paintColor, fp);
 }
 #else
 bool SkPictureShader::asFragmentProcessor(GrContext*, const SkPaint&, const SkMatrix&,
                                           const SkMatrix*, GrColor*,
                                           GrFragmentProcessor**) const {
     SkDEBUGFAIL("Should not call in GPU-less build");
     return false;
 }
 #endif