Update Layer Hoisting to store its atlas texture in the resource cache

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 "GrBlurUtils.h"
@@ skipping 2010 matching lines @@
 
     SkIRect iBounds;
     if (!mainCanvas->getClipDeviceBounds(&iBounds)) {
         return false;
     }
 
     SkRect clipBounds = SkRect::Make(iBounds);
 
     SkMatrix initialMatrix = mainCanvas->getTotalMatrix();
 
+    GrLayerHoister::Begin(fContext);
+
     GrLayerHoister::FindLayersToAtlas(fContext, mainPicture,
                                       initialMatrix,
                                       clipBounds,
                                       &atlasedNeedRendering, &atlasedRecycled,
                                       fRenderTarget->numColorSamples());
 
     GrLayerHoister::DrawLayersToAtlas(fContext, atlasedNeedRendering);
 
     SkTDArray<GrHoistedLayer> needRendering, recycled;
 
     SkAutoCanvasMatrixPaint acmp(mainCanvas, matrix, paint, mainPicture->cullRect());
 
     GrLayerHoister::FindLayersToHoist(fContext, mainPicture,
                                       initialMatrix,
                                       clipBounds,
                                       &needRendering, &recycled,
                                       fRenderTarget->numColorSamples());
 
     GrLayerHoister::DrawLayers(fContext, needRendering);
 
     // Render the entire picture using new layers
     GrRecordReplaceDraw(mainPicture, mainCanvas, fContext->getLayerCache(),
                         initialMatrix, nullptr);
 
     GrLayerHoister::UnlockLayers(fContext, needRendering);
     GrLayerHoister::UnlockLayers(fContext, recycled);
     GrLayerHoister::UnlockLayers(fContext, atlasedNeedRendering);
     GrLayerHoister::UnlockLayers(fContext, atlasedRecycled);
+    GrLayerHoister::End(fContext);
 
     return true;
 #else
     return false;
 #endif
 }
 
 SkImageFilter::Cache* SkGpuDevice::NewImageFilterCache() {
     return SkImageFilter::Cache::Create(kDefaultImageFilterCacheSize);
 }
 
 SkImageFilter::Cache* SkGpuDevice::getImageFilterCache() {
     // We always return a transient cache, so it is freed after each
     // filter traversal.
     return SkGpuDevice::NewImageFilterCache();
 }
 
 #endif