Introducing phased profiling framework

content/browser/profiler_controller_impl.h

 // 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/process/process.h"
 #include "content/common/content_export.h"
@@ skipping 26 matching lines @@
   // Send the |profiler_data| back to the |subscriber_|.
   // This can be called from any thread.
   void OnProfilerDataCollected(
       int sequence_number,
       const tracked_objects::ProcessDataSnapshot& profiler_data,
       int process_type);
 
   // ProfilerController implementation:
   void Register(ProfilerSubscriber* subscriber) override;
   void Unregister(const ProfilerSubscriber* subscriber) override;
-  void GetProfilerData(int sequence_number) override;
+  void GetProfilerData(int sequence_number, int profiling_phase) override;
+  void OnProfilingPhaseCompletion(int profiling_phase) override;
 
  private:
   friend struct DefaultSingletonTraits<ProfilerControllerImpl>;
 
   // Contact child processes and get their profiler data.
-  void GetProfilerDataFromChildProcesses(int sequence_number);
+  void GetProfilerDataFromChildProcesses(int sequence_number,
+                                         int profiling_phase);
+
+  // Contact child processes and notify them of a profiling phase completion.
+  void NotifyChildProcessesOfProfilingPhaseCompletion(int profiling_phase);
 
   ProfilerSubscriber* subscriber_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfilerControllerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_PROFILER_CONTROLLER_IMPL_H_