cc: Resize picture layer tiling set during commit

cc/picture_layer_impl.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/picture_layer_impl.h"
 
 #include "base/time.h"
 #include "cc/append_quads_data.h"
 #include "cc/checkerboard_draw_quad.h"
 #include "cc/debug_border_draw_quad.h"
@@ skipping 111 matching lines @@
     quadSink.append(quad.PassAs<DrawQuad>(), appendQuadsData);
   }
 }
 
 void PictureLayerImpl::dumpLayerProperties(std::string*, int indent) const {
   // TODO(enne): implement me
 }
 
 void PictureLayerImpl::didUpdateTransforms() {
   if (drawsContent()) {
-    tilings_.SetLayerBounds(bounds());
     // TODO(enne): Add more tilings during pinch zoom.
     if (!tilings_.num_tilings()) {
       gfx::Size tile_size = layerTreeHostImpl()->settings().defaultTileSize;
       tilings_.AddTiling(contentsScaleX(), tile_size);
       // TODO(enne): handle invalidations, create new tiles
     }
   } else {
     tilings_.Reset();
   }
 
@@ skipping 15 matching lines @@
                                 time_delta);
 
   last_screen_space_transform_ = current_screen_space_transform;
   last_update_time_ = current_time;
   last_bounds_ = bounds();
   last_content_bounds_ = contentBounds();
   last_content_scale_x_ = contentsScaleX();
   last_content_scale_y_ = contentsScaleY();
 }
 
+void PictureLayerImpl::didUpdateBounds() {
+  tilings_.SetLayerBounds(bounds());
+}
+
 scoped_refptr<Tile> PictureLayerImpl::CreateTile(PictureLayerTiling* tiling,
                                                  gfx::Rect rect) {
   TileManager* tile_manager = layerTreeHostImpl()->tileManager();
 
   return make_scoped_refptr(new Tile(
       tile_manager,
       pile_.get(),
       rect.size(),
       GL_RGBA,
       rect,
       tiling->contents_scale()));
 }
 
 void PictureLayerImpl::SyncFromActiveLayer(const PictureLayerImpl* other) {
   tilings_.CloneFrom(other->tilings_);
 }
 
 }  // namespace cc