Track parent-child relations during profiling

content/browser/profiler_controller_impl.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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_BROWSER_PROFILER_CONTROLLER_IMPL_H_
 #define CONTENT_BROWSER_PROFILER_CONTROLLER_IMPL_H_
 
 #include "base/memory/singleton.h"
+#include "base/tracked_objects.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/profiler_controller.h"
 
 namespace content {
 
 // ProfilerController's implementation.
 class CONTENT_EXPORT ProfilerControllerImpl : public ProfilerController {
  public:
   static ProfilerControllerImpl* GetInstance();
 
   // Normally instantiated when the child process is launched. Only one instance
   // should be created per process.
   ProfilerControllerImpl();
   virtual ~ProfilerControllerImpl();
 
   // Send number of pending processes to subscriber_. |end| is set to true if it
   // is the last time. This is called on UI thread.
   void OnPendingProcesses(int sequence_number, int pending_processes, bool end);
 
   // Send profiler_data back to subscriber_. subscriber_ assumes the ownership
   // of profiler_data. This is called on UI thread.
   void OnProfilerDataCollected(int sequence_number,
                                base::DictionaryValue* profiler_data);
 
   // ProfilerController implementation:
   virtual void Register(ProfilerSubscriber* subscriber) OVERRIDE;
   virtual void Unregister(ProfilerSubscriber* subscriber) OVERRIDE;
   virtual void GetProfilerData(int sequence_number) OVERRIDE;
-  virtual void SetProfilerStatus(bool enable) OVERRIDE;
+  virtual void SetProfilerStatus(
+      tracked_objects::ThreadData::Status status) OVERRIDE;
 
  private:
   friend struct DefaultSingletonTraits<ProfilerControllerImpl>;
 
   // Contact child processes and get their profiler data.
   void GetProfilerDataFromChildProcesses(int sequence_number);
 
   // Contact child processes and set profiler status to |enable|.
-  void SetProfilerStatusInChildProcesses(bool enable);
+  void SetProfilerStatusInChildProcesses(
+      tracked_objects::ThreadData::Status status);
 
   ProfilerSubscriber* subscriber_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfilerControllerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_PROFILER_CONTROLLER_IMPL_H_