Add GrResourceCache2.

src/gpu/GrLayerCache.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 "GrAtlas.h"
 #include "GrGpu.h"
 #include "GrLayerCache.h"
@@ skipping 94 matching lines @@
         GrCachedLayer* layer = &(*iter);
         this->unlock(layer);
         SkDELETE(layer);
     }
     fLayerHash.rewind();
 
     // The atlas only lets go of its texture when the atlas is deleted. 
     fAtlas.free();
     // GrLayerCache always assumes an atlas exists so recreate it. The atlas 
     // lazily allocates a replacement texture so reallocating a new 
-    // atlas here won't disrupt a GrContext::contextDestroyed or freeGpuResources.
+    // atlas here won't disrupt a GrContext::abandonContext or freeGpuResources.
     // TODO: Make GrLayerCache lazily allocate the atlas manager?
     this->initAtlas();
 }
 
 GrCachedLayer* GrLayerCache::createLayer(const SkPicture* picture, 
                                          int start, int stop, 
                                          const SkMatrix& ctm) {
     SkASSERT(picture->uniqueID() != SK_InvalidGenID && start > 0 && stop > 0);
 
     GrCachedLayer* layer = SkNEW_ARGS(GrCachedLayer, (picture->uniqueID(), start, stop, ctm));
@@ skipping 267 matching lines @@
 
 void GrLayerCache::processDeletedPictures() {
     SkTDArray<GrPictureDeletedMessage> deletedPictures;
     fPictDeletionInbox.poll(&deletedPictures);
 
     for (int i = 0; i < deletedPictures.count(); i++) {
         this->purge(deletedPictures[i].pictureID);
     }
 }