Implement system tracing for cros

content/browser/tracing/tracing_controller_impl.h

 // Copyright 2013 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_TRACING_TRACING_CONTROLLER_IMPL_H_
 #define CONTENT_BROWSER_TRACING_TRACING_CONTROLLER_IMPL_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 97 matching lines @@
   // Callback of TraceLog::FlushMonitoring() for the local trace.
   void OnLocalMonitoringTraceDataCollected(
       const scoped_refptr<base::RefCountedString>& events_str_ptr,
       bool has_more_events);
 
   void OnDisableRecordingAcked(
       TraceMessageFilter* trace_message_filter,
       const std::vector<std::string>& known_category_groups);
   void OnResultFileClosed();
 
+  void OnEndSystemTracingAcked(
+      const scoped_refptr<base::RefCountedString>& events_str_ptr);
+
   void OnCaptureMonitoringSnapshotAcked(
       TraceMessageFilter* trace_message_filter);
   void OnMonitoringSnapshotFileClosed();
 
   void OnTraceBufferPercentFullReply(
       TraceMessageFilter* trace_message_filter,
       float percent_full);
 
   void OnWatchEventMatched();
 
@@ skipping 22 matching lines @@
   // Pending acks for CaptureMonitoringSnapshot.
   int pending_capture_monitoring_snapshot_ack_count_;
   TraceMessageFilterSet pending_capture_monitoring_filters_;
   // Pending acks for GetTraceBufferPercentFull.
   int pending_trace_buffer_percent_full_ack_count_;
   TraceMessageFilterSet pending_trace_buffer_percent_full_filters_;
   float maximum_trace_buffer_percent_full_;
 
   bool is_recording_;
   bool is_monitoring_;
+  bool is_system_tracing_;
   TracingController::Options options_;
 
   GetCategoriesDoneCallback pending_get_categories_done_callback_;
   TracingFileResultCallback pending_disable_recording_done_callback_;
   TracingFileResultCallback pending_capture_monitoring_snapshot_done_callback_;
   GetTraceBufferPercentFullCallback pending_trace_buffer_percent_full_callback_;
 
   std::string watch_category_name_;
   std::string watch_event_name_;
   WatchEventCallback watch_event_callback_;
 
   std::set<std::string> known_category_groups_;
   std::set<TracingUI*> tracing_uis_;
   scoped_ptr<ResultFile> result_file_;
   scoped_ptr<ResultFile> monitoring_snapshot_file_;
   DISALLOW_COPY_AND_ASSIGN(TracingControllerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_TRACING_TRACING_CONTROLLER_IMPL_H_