cc: Add checker-imaging support to TileManager.

cc/tiles/image_controller.cc

 // Copyright 2016 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_controller.h"
 
 #include "base/bind.h"
 #include "base/task_scheduler/post_task.h"
 #include "base/task_scheduler/task_traits.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/trace_event/trace_event.h"
 #include "cc/base/completion_event.h"
 #include "cc/tiles/tile_task_manager.h"
 
 namespace cc {
 
 ImageController::ImageDecodeRequestId
     ImageController::s_next_image_decode_queue_id_ = 1;
 
 ImageController::ImageController(
     base::SequencedTaskRunner* origin_task_runner,
     scoped_refptr<base::SequencedTaskRunner> worker_task_runner)
-    : origin_task_runner_(origin_task_runner),
-      worker_task_runner_(std::move(worker_task_runner)),
+    : worker_task_runner_(std::move(worker_task_runner)),
+      origin_task_runner_(origin_task_runner),
       weak_ptr_factory_(this) {}
 
 ImageController::~ImageController() {
   StopWorkerTasks();
 }
 
 void ImageController::StopWorkerTasks() {
   // We can't have worker threads without a cache_ or a worker_task_runner_, so
   // terminate early.
   if (!cache_ || !worker_task_runner_)
@@ skipping 273 matching lines @@
 ImageController::ImageDecodeRequest::ImageDecodeRequest(
     const ImageDecodeRequest& other) = default;
 ImageController::ImageDecodeRequest::~ImageDecodeRequest() = default;
 
 ImageController::ImageDecodeRequest& ImageController::ImageDecodeRequest::
 operator=(ImageDecodeRequest&& other) = default;
 ImageController::ImageDecodeRequest& ImageController::ImageDecodeRequest::
 operator=(const ImageDecodeRequest& other) = default;
 
 }  // namespace cc