cc: Refactor TileTaskWorkerPool.

cc/raster/bitmap_tile_task_worker_pool.cc

 // Copyright 2014 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/raster/bitmap_tile_task_worker_pool.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 50 matching lines @@
   const Resource* resource_;
   bool resource_has_previous_content_;
 
   DISALLOW_COPY_AND_ASSIGN(RasterBufferImpl);
 };
 
 }  // namespace
 
 // static
 std::unique_ptr<TileTaskWorkerPool> BitmapTileTaskWorkerPool::Create(
-    base::SequencedTaskRunner* task_runner,
-    TaskGraphRunner* task_graph_runner,
     ResourceProvider* resource_provider) {
-  return base::WrapUnique<TileTaskWorkerPool>(new BitmapTileTaskWorkerPool(
-      task_runner, task_graph_runner, resource_provider));
+  return base::WrapUnique<TileTaskWorkerPool>(
+      new BitmapTileTaskWorkerPool(resource_provider));
 }
 
 BitmapTileTaskWorkerPool::BitmapTileTaskWorkerPool(
-    base::SequencedTaskRunner* task_runner,
-    TaskGraphRunner* task_graph_runner,
     ResourceProvider* resource_provider)
-    : task_runner_(task_runner),
-      task_graph_runner_(task_graph_runner),
-      namespace_token_(task_graph_runner->GetNamespaceToken()),
-      resource_provider_(resource_provider) {}
+    : resource_provider_(resource_provider) {}
 
 BitmapTileTaskWorkerPool::~BitmapTileTaskWorkerPool() {
 }
 
-void BitmapTileTaskWorkerPool::Shutdown() {
-  TRACE_EVENT0("cc", "BitmapTileTaskWorkerPool::Shutdown");
-
-  TaskGraph empty;
-  task_graph_runner_->ScheduleTasks(namespace_token_, &empty);
-  task_graph_runner_->WaitForTasksToFinishRunning(namespace_token_);
-}
-
-void BitmapTileTaskWorkerPool::ScheduleTasks(TaskGraph* graph) {
-  TRACE_EVENT0("cc", "BitmapTileTaskWorkerPool::ScheduleTasks");
-
-  ScheduleTasksOnOriginThread(this, graph);
-  task_graph_runner_->ScheduleTasks(namespace_token_, graph);
-}
-
-void BitmapTileTaskWorkerPool::CheckForCompletedTasks() {
-  TRACE_EVENT0("cc", "BitmapTileTaskWorkerPool::CheckForCompletedTasks");
-
-  task_graph_runner_->CollectCompletedTasks(namespace_token_,
-                                            &completed_tasks_);
-  for (Task::Vector::const_iterator it = completed_tasks_.begin();
-       it != completed_tasks_.end(); ++it) {
-    TileTask* task = static_cast<TileTask*>(it->get());
-
-    task->WillComplete();
-    task->CompleteOnOriginThread(this);
-    task->DidComplete();
-  }
-  completed_tasks_.clear();
-}
+void BitmapTileTaskWorkerPool::BarrierToSyncResources() {}
 
 ResourceFormat BitmapTileTaskWorkerPool::GetResourceFormat(
     bool must_support_alpha) const {
   return resource_provider_->best_texture_format();
 }
 
 bool BitmapTileTaskWorkerPool::GetResourceRequiresSwizzle(
     bool must_support_alpha) const {
   return ResourceFormatRequiresSwizzle(GetResourceFormat(must_support_alpha));
 }
 
 RasterBufferProvider* BitmapTileTaskWorkerPool::AsRasterBufferProvider() {
   return this;
 }
 
 std::unique_ptr<RasterBuffer> BitmapTileTaskWorkerPool::AcquireBufferForRaster(
     const Resource* resource,
     uint64_t resource_content_id,
     uint64_t previous_content_id) {
   return std::unique_ptr<RasterBuffer>(new RasterBufferImpl(
       resource_provider_, resource, resource_content_id, previous_content_id));
 }
 
 void BitmapTileTaskWorkerPool::ReleaseBufferForRaster(
     std::unique_ptr<RasterBuffer> buffer) {
   // Nothing to do here. RasterBufferImpl destructor cleans up after itself.
 }
 
 }  // namespace cc