Reimplement gpu message bus for invalidated bitmap gen IDs

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 452 matching lines @@
         this->purgePlot(plot);
     }
 
     SkASSERT(0 == fPictureHash.count());
 
     fContext->discardRenderTarget(fAtlas->getTexture()->asRenderTarget());
 }
 #endif
 
 void GrLayerCache::processDeletedPictures() {
-    SkTDArray<SkPicture::DeletionMessage> deletedPictures;
+    SkTArray<SkPicture::DeletionMessage> deletedPictures;
     fPictDeletionInbox.poll(&deletedPictures);
 
     for (int i = 0; i < deletedPictures.count(); i++) {
         this->purge(deletedPictures[i].fUniqueID);
     }
 }
 
 #ifdef SK_DEVELOPER
 void GrLayerCache::writeLayersToDisk(const SkString& dirName) {
 
@@ skipping 19 matching lines @@
         fileName.appendf("\\%d", layer->fKey.pictureID());
         for (int i = 0; i < layer->fKey.keySize(); ++i) {
             fileName.appendf("-%d", layer->fKey.key()[i]);
         }
         fileName.appendf(".png");
 
         layer->texture()->surfacePriv().savePixels(fileName.c_str());
     }
 }
 #endif