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

cc/tiles/image_decode_controller.cc

 // Copyright 2015 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/image_decode_controller.h"
 
 #include "cc/debug/devtools_instrumentation.h"
 
 namespace cc {
 namespace {
@@ skipping 42 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(ImageDecodeTaskImpl);
 };
 
 }  // namespace
 
 ImageDecodeController::ImageDecodeController() {}
 
 ImageDecodeController::~ImageDecodeController() {}
 
 scoped_refptr<ImageDecodeTask> ImageDecodeController::GetTaskForPixelRef(
-    SkPixelRef* pixel_ref,
+    const skia::PositionPixelRef& pixel_ref,
     int layer_id,
     uint64_t prepare_tiles_id) {
-  uint32_t generation_id = pixel_ref->getGenerationID();
+  uint32_t generation_id = pixel_ref.pixel_ref->getGenerationID();
   scoped_refptr<ImageDecodeTask>& decode_task =
       image_decode_tasks_[layer_id][generation_id];
   if (!decode_task)
-    decode_task = CreateTaskForPixelRef(pixel_ref, layer_id, prepare_tiles_id);
+    decode_task =
+        CreateTaskForPixelRef(pixel_ref.pixel_ref, layer_id, prepare_tiles_id);
   return decode_task;
 }
 
 scoped_refptr<ImageDecodeTask> ImageDecodeController::CreateTaskForPixelRef(
     SkPixelRef* pixel_ref,
     int layer_id,
     uint64_t prepare_tiles_id) {
   return make_scoped_refptr(
       new ImageDecodeTaskImpl(this, pixel_ref, layer_id, prepare_tiles_id));
 }
@@ skipping 34 matching lines @@
 
   PixelRefTaskMap& pixel_ref_tasks = layer_it->second;
   PixelRefTaskMap::iterator task_it =
       pixel_ref_tasks.find(pixel_ref->getGenerationID());
   if (task_it == pixel_ref_tasks.end())
     return;
   pixel_ref_tasks.erase(task_it);
 }
 
 }  // namespace cc