Fix memory leak in GPU Picture optimization

src/gpu/SkGpuDevice.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 "SkGpuDevice.h"
 
 #include "effects/GrBicubicEffect.h"
@@ skipping 1895 matching lines @@
     }
 }
 
 SkSurface* SkGpuDevice::newSurface(const SkImageInfo& info) {
     return SkSurface::NewRenderTarget(fContext, info, fRenderTarget->numSamples());
 }
 
 void SkGpuDevice::EXPERIMENTAL_optimize(SkPicture* picture) {
     SkPicture::AccelData::Key key = GPUAccelData::ComputeAccelDataKey();
 
-    GPUAccelData* data = SkNEW_ARGS(GPUAccelData, (key));
+    SkAutoTUnref<GPUAccelData> data(SkNEW_ARGS(GPUAccelData, (key)));
 
     picture->EXPERIMENTAL_addAccelData(data);
 
     GatherGPUInfo(picture, data);
 }
 
 void SkGpuDevice::EXPERIMENTAL_purge(SkPicture* picture) {
 
 }
 
@@ skipping 33 matching lines @@
             const GPUAccelData::SaveLayerInfo& info = gpuData->saveLayerInfo(j);
 
             if (ops.offset(i) > info.fSaveLayerOpID && ops.offset(i) < info.fRestoreOpID) {
                 pullForward[j] = true;
             }
         }
     }
 
     return false;
 }