Remove parts of //cc we aren't using

cc/resources/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/resources/gpu_tile_task_worker_pool.h"
-
-#include <algorithm>
-
-#include "base/trace_event/trace_event.h"
-#include "cc/resources/gpu_rasterizer.h"
-#include "cc/resources/raster_buffer.h"
-#include "cc/resources/raster_source.h"
-#include "cc/resources/resource.h"
-#include "cc/resources/scoped_gpu_raster.h"
-#include "gpu/command_buffer/client/gles2_interface.h"
-#include "third_party/skia/include/core/SkMultiPictureDraw.h"
-#include "third_party/skia/include/core/SkPictureRecorder.h"
-#include "third_party/skia/include/core/SkSurface.h"
-#include "third_party/skia/include/gpu/GrContext.h"
-
-namespace cc {
-namespace {
-
-class RasterBufferImpl : public RasterBuffer {
- public:
-  RasterBufferImpl(GpuRasterizer* rasterizer, const Resource* resource)
-      : rasterizer_(rasterizer),
-        lock_(rasterizer->resource_provider(), resource->id()),
-        resource_(resource) {}
-
-  // Overridden from RasterBuffer:
-  void Playback(const RasterSource* raster_source,
-                const gfx::Rect& rect,
-                float scale) override {
-    TRACE_EVENT0("cc", "RasterBufferImpl::Playback");
-    ContextProvider* context_provider = rasterizer_->resource_provider()
-                                            ->output_surface()
-                                            ->worker_context_provider();
-
-    // The context lock must be held while accessing the context on a
-    // worker thread.
-    base::AutoLock context_lock(*context_provider->GetLock());
-
-    // Allow this worker thread to bind to context_provider.
-    context_provider->DetachFromThread();
-
-    // Rasterize source into resource.
-    rasterizer_->RasterizeSource(true, &lock_, raster_source, rect, scale);
-
-    // Barrier to sync worker context output to cc context.
-    context_provider->ContextGL()->OrderingBarrierCHROMIUM();
-
-    // Allow compositor thread to bind to context_provider.
-    context_provider->DetachFromThread();
-  }
-
- private:
-  GpuRasterizer* rasterizer_;
-  ResourceProvider::ScopedWriteLockGr lock_;
-  const Resource* resource_;
-
-  DISALLOW_COPY_AND_ASSIGN(RasterBufferImpl);
-};
-
-}  // namespace
-
-// static
-scoped_ptr<TileTaskWorkerPool> GpuTileTaskWorkerPool::Create(
-    base::SequencedTaskRunner* task_runner,
-    TaskGraphRunner* task_graph_runner,
-    GpuRasterizer* rasterizer) {
-  return make_scoped_ptr<TileTaskWorkerPool>(
-      new GpuTileTaskWorkerPool(task_runner, task_graph_runner, rasterizer));
-}
-
-GpuTileTaskWorkerPool::GpuTileTaskWorkerPool(
-    base::SequencedTaskRunner* task_runner,
-    TaskGraphRunner* task_graph_runner,
-    GpuRasterizer* rasterizer)
-    : task_runner_(task_runner),
-      task_graph_runner_(task_graph_runner),
-      namespace_token_(task_graph_runner_->GetNamespaceToken()),
-      rasterizer_(rasterizer),
-      task_set_finished_weak_ptr_factory_(this),
-      weak_ptr_factory_(this) {
-}
-
-GpuTileTaskWorkerPool::~GpuTileTaskWorkerPool() {
-  DCHECK_EQ(0u, completed_tasks_.size());
-}
-
-TileTaskRunner* GpuTileTaskWorkerPool::AsTileTaskRunner() {
-  return this;
-}
-
-void GpuTileTaskWorkerPool::SetClient(TileTaskRunnerClient* client) {
-  client_ = client;
-}
-
-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(TileTaskQueue* queue) {
-  TRACE_EVENT0("cc", "GpuTileTaskWorkerPool::ScheduleTasks");
-
-  // Mark all task sets as pending.
-  tasks_pending_.set();
-
-  unsigned priority = kTileTaskPriorityBase;
-
-  graph_.Reset();
-
-  // Cancel existing OnTaskSetFinished callbacks.
-  task_set_finished_weak_ptr_factory_.InvalidateWeakPtrs();
-
-  scoped_refptr<TileTask> new_task_set_finished_tasks[kNumberOfTaskSets];
-
-  size_t task_count[kNumberOfTaskSets] = {0};
-
-  for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
-    new_task_set_finished_tasks[task_set] = CreateTaskSetFinishedTask(
-        task_runner_.get(),
-        base::Bind(&GpuTileTaskWorkerPool::OnTaskSetFinished,
-                   task_set_finished_weak_ptr_factory_.GetWeakPtr(), task_set));
-  }
-
-  for (TileTaskQueue::Item::Vector::const_iterator it = queue->items.begin();
-       it != queue->items.end(); ++it) {
-    const TileTaskQueue::Item& item = *it;
-    RasterTask* task = item.task;
-    DCHECK(!task->HasCompleted());
-
-    for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
-      if (!item.task_sets[task_set])
-        continue;
-
-      ++task_count[task_set];
-
-      graph_.edges.push_back(
-          TaskGraph::Edge(task, new_task_set_finished_tasks[task_set].get()));
-    }
-
-    InsertNodesForRasterTask(&graph_, task, task->dependencies(), priority++);
-  }
-
-  for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
-    InsertNodeForTask(&graph_, new_task_set_finished_tasks[task_set].get(),
-                      kTaskSetFinishedTaskPriorityBase + task_set,
-                      task_count[task_set]);
-  }
-
-  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_);
-
-  std::copy(new_task_set_finished_tasks,
-            new_task_set_finished_tasks + kNumberOfTaskSets,
-            task_set_finished_tasks_);
-}
-
-void GpuTileTaskWorkerPool::CheckForCompletedTasks() {
-  TRACE_EVENT0("cc", "GpuTileTaskWorkerPool::CheckForCompletedTasks");
-
-  task_graph_runner_->CollectCompletedTasks(namespace_token_,
-                                            &completed_tasks_);
-  CompleteTasks(completed_tasks_);
-  completed_tasks_.clear();
-}
-
-ResourceFormat GpuTileTaskWorkerPool::GetResourceFormat() {
-  return rasterizer_->resource_provider()->best_texture_format();
-}
-
-void GpuTileTaskWorkerPool::CompleteTasks(const Task::Vector& tasks) {
-  for (auto& task : tasks) {
-    RasterTask* raster_task = static_cast<RasterTask*>(task.get());
-
-    raster_task->WillComplete();
-    raster_task->CompleteOnOriginThread(this);
-    raster_task->DidComplete();
-
-    raster_task->RunReplyOnOriginThread();
-  }
-  completed_tasks_.clear();
-}
-
-scoped_ptr<RasterBuffer> GpuTileTaskWorkerPool::AcquireBufferForRaster(
-    const Resource* resource) {
-  return make_scoped_ptr<RasterBuffer>(
-      new RasterBufferImpl(rasterizer_, resource));
-}
-
-void GpuTileTaskWorkerPool::ReleaseBufferForRaster(
-    scoped_ptr<RasterBuffer> buffer) {
-  // Nothing to do here. RasterBufferImpl destructor cleans up after itself.
-}
-
-void GpuTileTaskWorkerPool::OnTaskSetFinished(TaskSet task_set) {
-  TRACE_EVENT1("cc", "GpuTileTaskWorkerPool::OnTaskSetFinished", "task_set",
-               task_set);
-
-  DCHECK(tasks_pending_[task_set]);
-  tasks_pending_[task_set] = false;
-  client_->DidFinishRunningTileTasks(task_set);
-}
-
-}  // namespace cc