cc: Plumb more details about pixel refs to tile manager.

cc/tiles/tile_manager.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/tiles/tile_manager.h"
 
 #include <algorithm>
 #include <limits>
 #include <string>
 
@@ skipping 671 matching lines @@
     DCHECK_EQ(tile->desired_texture_size().ToString(),
               resource->size().ToString());
   } else {
     resource = resource_pool_->AcquireResource(
         tile->desired_texture_size(), tile_task_runner_->GetResourceFormat());
   }
   const ScopedResource* const_resource = resource.get();
 
   // Create and queue all image decode tasks that this tile depends on.
   ImageDecodeTask::Vector decode_tasks;
-  std::vector<SkPixelRef*> pixel_refs;
+  std::vector<skia::PositionPixelRef> pixel_refs;
   prioritized_tile.raster_source()->GatherPixelRefs(
       tile->content_rect(), tile->contents_scale(), &pixel_refs);
-  for (SkPixelRef* pixel_ref : pixel_refs) {
+  for (const skia::PositionPixelRef& pixel_ref : pixel_refs) {
     decode_tasks.push_back(image_decode_controller_.GetTaskForPixelRef(
         pixel_ref, tile->layer_id(), prepare_tiles_count_));
   }
 
   return make_scoped_refptr(new RasterTaskImpl(
       const_resource, prioritized_tile.raster_source(), tile->content_rect(),
       tile->invalidated_content_rect(), tile->contents_scale(),
       prioritized_tile.priority().resolution, tile->layer_id(),
       prepare_tiles_count_, static_cast<const void*>(tile), tile->id(),
       tile->invalidated_id(), resource_content_id, tile->source_frame_number(),
@@ skipping 298 matching lines @@
 void TileManager::Signals::reset() {
   ready_to_activate = false;
   did_notify_ready_to_activate = false;
   ready_to_draw = false;
   did_notify_ready_to_draw = false;
   all_tile_tasks_completed = false;
   did_notify_all_tile_tasks_completed = false;
 }
 
 }  // namespace cc