cc: Remove ScheduleOnOriginThread() and CompleteOnOriginThread().

cc/raster/task.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/raster/task.h"
 
 #include "base/logging.h"
 
 namespace cc {
 
 TaskState::TaskState() : value_(Value::NEW) {}
 
 TaskState::~TaskState() {
   DCHECK(value_ != Value::RUNNING)
       << "Running task should never get destroyed.";
-  DCHECK(value_ == Value::NEW || value_ == Value::FINISHED ||
-         value_ == Value::CANCELED)
-      << "Task, if scheduled, should get concluded either in FINISHED or "
-         "CANCELED state.";
+  DCHECK(value_ == Value::NEW || value_ == Value::COMPLETED)
+      << "Task, if scheduled, should get concluded in COMPLETED state.";
 }
 
 bool TaskState::IsScheduled() const {
   return value_ == Value::SCHEDULED;
 }
 
 bool TaskState::IsRunning() const {
   return value_ == Value::RUNNING;
 }
+
 bool TaskState::IsFinished() const {
   return value_ == Value::FINISHED;
 }
+
 bool TaskState::IsCanceled() const {
   return value_ == Value::CANCELED;
 }
 
+bool TaskState::IsCompleted() const {
+  return value_ == Value::COMPLETED;
+}
+
 void TaskState::Reset() {
   value_ = Value::NEW;
 }
 
 void TaskState::DidSchedule() {
   DCHECK(value_ == Value::NEW)
       << "Task should be in NEW state to get scheduled.";
   value_ = Value::SCHEDULED;
 }
 
 void TaskState::DidStart() {
   DCHECK(value_ == Value::SCHEDULED)
       << "Task should be only in SCHEDULED state to start, that is it should "
          "not be started or finished.";
   value_ = Value::RUNNING;
 }
 
 void TaskState::DidFinish() {
   DCHECK(value_ == Value::RUNNING)
       << "Task should be running and not finished earlier.";
   value_ = Value::FINISHED;
 }
 
 void TaskState::DidCancel() {
   DCHECK(value_ == Value::NEW || value_ == Value::SCHEDULED)
       << "Task should be scheduled and not running to get canceled.";
   value_ = Value::CANCELED;
 }
 
+void TaskState::DidComplete() {
+  DCHECK(value_ == Value::FINISHED || value_ == Value::CANCELED)
+      << "Task should be finished or cancelled to get completed. Unscheduled "
+         "tasks cannot be completed.";
+  value_ = Value::COMPLETED;
+}
+
 Task::Task() {}
 
 Task::~Task() {}
 
 TaskGraph::TaskGraph() {}
 
 TaskGraph::TaskGraph(const TaskGraph& other) = default;
 
 TaskGraph::~TaskGraph() {}
 
 void TaskGraph::Swap(TaskGraph* other) {
   nodes.swap(other->nodes);
   edges.swap(other->edges);
 }
 
 void TaskGraph::Reset() {
   nodes.clear();
   edges.clear();
 }
 
 }  // namespace cc