cc: Remove ScheduleOnOriginThread() and CompleteOnOriginThread().

cc/raster/gpu_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/gpu_tile_task_worker_pool.h"
 
 #include <stdint.h>
 
 #include <algorithm>
 
@@ skipping 99 matching lines @@
     int gpu_rasterization_msaa_sample_count)
     : task_runner_(task_runner),
       task_graph_runner_(task_graph_runner),
       namespace_token_(task_graph_runner_->GetNamespaceToken()),
       rasterizer_(new GpuRasterizer(context_provider,
                                     resource_provider,
                                     use_distance_field_text,
                                     gpu_rasterization_msaa_sample_count)) {}
 
 GpuTileTaskWorkerPool::~GpuTileTaskWorkerPool() {
-  DCHECK_EQ(0u, completed_tasks_.size());
 }
 
 TileTaskRunner* GpuTileTaskWorkerPool::AsTileTaskRunner() {
   return this;
 }
 
 void GpuTileTaskWorkerPool::Shutdown() {
   TRACE_EVENT0("cc", "GpuTileTaskWorkerPool::Shutdown");
 
   TaskGraph empty;
   task_graph_runner_->ScheduleTasks(namespace_token_, &empty);
   task_graph_runner_->WaitForTasksToFinishRunning(namespace_token_);
 }
 
 void GpuTileTaskWorkerPool::ScheduleTasks(TaskGraph* graph) {
   TRACE_EVENT0("cc", "GpuTileTaskWorkerPool::ScheduleTasks");
 
-  ScheduleTasksOnOriginThread(this, graph);
-
   // Barrier to sync any new resources to the worker context.
   rasterizer_->resource_provider()
       ->output_surface()
       ->context_provider()
       ->ContextGL()
       ->OrderingBarrierCHROMIUM();
 
   task_graph_runner_->ScheduleTasks(namespace_token_, graph);
 }
 
-void GpuTileTaskWorkerPool::CheckForCompletedTasks() {
+void GpuTileTaskWorkerPool::CollectCompletedTasks(
+    Task::Vector* completed_tasks) {
   TRACE_EVENT0("cc", "GpuTileTaskWorkerPool::CheckForCompletedTasks");
 
-  task_graph_runner_->CollectCompletedTasks(namespace_token_,
-                                            &completed_tasks_);
-  CompleteTasks(completed_tasks_);
-  completed_tasks_.clear();
+  task_graph_runner_->CollectCompletedTasks(namespace_token_, completed_tasks);
 }
 
 ResourceFormat GpuTileTaskWorkerPool::GetResourceFormat(
     bool must_support_alpha) const {
   return rasterizer_->resource_provider()->best_render_buffer_format();
 }
 
 bool GpuTileTaskWorkerPool::GetResourceRequiresSwizzle(
     bool must_support_alpha) const {
   // This doesn't require a swizzle because we rasterize to the correct format.
   return false;
 }
 
-void GpuTileTaskWorkerPool::CompleteTasks(const Task::Vector& tasks) {
-  for (auto& task : tasks) {
-    TileTask* tile_task = static_cast<TileTask*>(task.get());
-
-    tile_task->WillComplete();
-    tile_task->CompleteOnOriginThread(this);
-    tile_task->DidComplete();
-  }
-  completed_tasks_.clear();
+TileTaskClient* GpuTileTaskWorkerPool::AsTileTaskClient() {
+  return this;
 }
 
 scoped_ptr<RasterBuffer> GpuTileTaskWorkerPool::AcquireBufferForRaster(
     const Resource* resource,
     uint64_t resource_content_id,
     uint64_t previous_content_id) {
   return scoped_ptr<RasterBuffer>(new RasterBufferImpl(
       rasterizer_.get(), resource, resource_content_id, previous_content_id));
 }
 
 void GpuTileTaskWorkerPool::ReleaseBufferForRaster(
     scoped_ptr<RasterBuffer> buffer) {
   // Nothing to do here. RasterBufferImpl destructor cleans up after itself.
 }
 
 }  // namespace cc