Implement frame attribution (FrameBlamer)

components/scheduler/renderer/web_frame_scheduler_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 COMPONENTS_SCHEDULER_RENDERER_WEB_FRAME_SCHEDULER_IMPL_H_
 #define COMPONENTS_SCHEDULER_RENDERER_WEB_FRAME_SCHEDULER_IMPL_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/trace_event/trace_event.h"
 #include "components/scheduler/base/task_queue.h"
 #include "components/scheduler/scheduler_export.h"
 #include "third_party/WebKit/public/platform/WebFrameScheduler.h"
 #include "third_party/WebKit/public/platform/WebSecurityOrigin.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }  // namespace base
 
+namespace blink {
+class WebBlameContext;
+}
+
 namespace scheduler {
 
 class AutoAdvancingVirtualTimeDomain;
+class FrameBlameContext;
 class RendererSchedulerImpl;
 class TaskQueue;
 class WebTaskRunnerImpl;
 class WebViewSchedulerImpl;
 
 class SCHEDULER_EXPORT WebFrameSchedulerImpl : public blink::WebFrameScheduler {
  public:
   WebFrameSchedulerImpl(RendererSchedulerImpl* renderer_scheduler,
-                        WebViewSchedulerImpl* parent_web_view_scheduler);
+                        WebViewSchedulerImpl* parent_web_view_scheduler,
+                        blink::WebBlameContext* blame_context);
 
   ~WebFrameSchedulerImpl() override;
 
   // blink::WebFrameScheduler implementation:
   void setFrameVisible(bool frame_visible) override;
   void setPageVisible(bool page_visible) override;
   blink::WebTaskRunner* loadingTaskRunner() override;
   blink::WebTaskRunner* timerTaskRunner() override;
   void setFrameOrigin(const blink::WebSecurityOrigin& origin) override;
 
   void OnVirtualTimeDomainChanged();
 
  private:
   friend class WebViewSchedulerImpl;
 
   void DetachFromWebViewScheduler();
   void ApplyPolicyToTimerQueue();
 
   scoped_refptr<TaskQueue> loading_task_queue_;
   scoped_refptr<TaskQueue> timer_task_queue_;
   scoped_ptr<WebTaskRunnerImpl> loading_web_task_runner_;
   scoped_ptr<WebTaskRunnerImpl> timer_web_task_runner_;
   RendererSchedulerImpl* renderer_scheduler_;            // NOT OWNED
   WebViewSchedulerImpl* parent_web_view_scheduler_;      // NOT OWNED
   TaskQueue::PumpPolicy virtual_time_pump_policy_;
   blink::WebSecurityOrigin origin_;
   bool frame_visible_;
   bool page_visible_;
+  scoped_ptr<FrameBlameContext> blame_context_;
 
   DISALLOW_COPY_AND_ASSIGN(WebFrameSchedulerImpl);
 };
 
 }  // namespace scheduler
 
 #endif  // COMPONENTS_SCHEDULER_RENDERER_WEB_FRAME_SCHEDULER_IMPL_H_