Implement frame attribution (FrameBlamer)

components/scheduler/base/task_queue_impl.h

 // Copyright 2015 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.
 
 #ifndef CONTENT_RENDERER_SCHEDULER_BASE_TASK_QUEUE_IMPL_H_
 #define CONTENT_RENDERER_SCHEDULER_BASE_TASK_QUEUE_IMPL_H_
 
 #include <stddef.h>
 
 #include <set>
@@ skipping 87 matching lines @@
   void SetQueuePriority(QueuePriority priority) override;
   QueuePriority GetQueuePriority() const override;
   void PumpQueue(bool may_post_dowork) override;
   void SetPumpPolicy(PumpPolicy pump_policy) override;
   PumpPolicy GetPumpPolicy() const override;
   void AddTaskObserver(base::MessageLoop::TaskObserver* task_observer) override;
   void RemoveTaskObserver(
       base::MessageLoop::TaskObserver* task_observer) override;
   void SetTimeDomain(TimeDomain* time_domain) override;
   TimeDomain* GetTimeDomain() const override;
+  void SetBlameContext(base::trace_event::BlameContext* blame_context) override;
 
   void UpdateImmediateWorkQueue(bool should_trigger_wakeup,
                                 const Task* previous_task);
   void UpdateDelayedWorkQueue(LazyNow* lazy_now,
                               bool should_trigger_wakeup,
                               const Task* previous_task);
 
   WakeupPolicy wakeup_policy() const {
     DCHECK(main_thread_checker_.CalledOnValidThread());
     return wakeup_policy_;
@@ skipping 78 matching lines @@
     TaskQueueManager* task_queue_manager;
     PumpPolicy pump_policy;
     TimeDomain* time_domain;
 
     scoped_ptr<WorkQueue> delayed_work_queue;
     scoped_ptr<WorkQueue> immediate_work_queue;
     std::priority_queue<Task> delayed_incoming_queue;
     base::ObserverList<base::MessageLoop::TaskObserver> task_observers;
     size_t set_index;
     bool is_enabled;
+    base::trace_event::BlameContext* blame_context;  // Not owned.
   };
 
   ~TaskQueueImpl() override;
 
   bool PostImmediateTaskImpl(const tracked_objects::Location& from_here,
                              const base::Closure& task,
                              TaskType task_type);
   bool PostDelayedTaskImpl(const tracked_objects::Location& from_here,
                            const base::Closure& task,
                            base::TimeDelta delay,
@@ skipping 81 matching lines @@
   const bool should_notify_observers_;
   const bool should_report_when_execution_blocked_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskQueueImpl);
 };
 
 }  // namespace internal
 }  // namespace scheduler
 
 #endif  // CONTENT_RENDERER_SCHEDULER_BASE_TASK_QUEUE_IMPL_H_