Implement frame attribution (FrameBlamer)

components/scheduler/renderer/web_frame_scheduler_impl.h

Index: components/scheduler/renderer/web_frame_scheduler_impl.h
diff --git a/components/scheduler/renderer/web_frame_scheduler_impl.h b/components/scheduler/renderer/web_frame_scheduler_impl.h
index 6d088f36572b18a42faa7f8a963c1d8b536b5663..c34a9bb2d2a5e4c382a6546b03841f076c81992b 100644
--- a/components/scheduler/renderer/web_frame_scheduler_impl.h
+++ b/components/scheduler/renderer/web_frame_scheduler_impl.h
@@ -8,6 +8,7 @@
 #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"
@@ -17,9 +18,14 @@ namespace base {
 class SingleThreadTaskRunner;
 }  // namespace base
 
+namespace blink {
+class WebBlameContext;
+}
+
 namespace scheduler {
 
 class AutoAdvancingVirtualTimeDomain;
+class FrameBlameContext;
 class RendererSchedulerImpl;
 class TaskQueue;
 class WebTaskRunnerImpl;
@@ -28,7 +34,8 @@ 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;
 
@@ -57,6 +64,7 @@ class SCHEDULER_EXPORT WebFrameSchedulerImpl : public blink::WebFrameScheduler {
   blink::WebSecurityOrigin origin_;
   bool frame_visible_;
   bool page_visible_;
+  scoped_ptr<FrameBlameContext> blame_context_;
 
   DISALLOW_COPY_AND_ASSIGN(WebFrameSchedulerImpl);
 };