Adds a callback to TracingAgent::StartAgentTracing()

content/browser/tracing/tracing_controller_impl.h

 // Copyright (c) 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 <stddef.h>
 #include <stdint.h>
 
@@ skipping 47 matching lines @@
                      const WatchEventCallback& callback) override;
   bool CancelWatchEvent() override;
   bool IsTracing() const override;
 
   void RegisterTracingUI(TracingUI* tracing_ui);
   void UnregisterTracingUI(TracingUI* tracing_ui);
 
   // base::trace_event::TracingAgent implementation.
   std::string GetTracingAgentName() override;
   std::string GetTraceEventLabel() override;
-  bool StartAgentTracing(
-      const base::trace_event::TraceConfig& trace_config) override;
+  void StartAgentTracing(const base::trace_event::TraceConfig& trace_config,
+                         const StartAgentTracingCallback& callback) override;
   void StopAgentTracing(const StopAgentTracingCallback& callback) override;
   bool SupportsExplicitClockSync() override;
   void RecordClockSyncMarker(
       int sync_id,
       const RecordClockSyncMarkerCallback& callback) override;
 
   // base::trace_event::MemoryDumpManagerDelegate implementation.
   void RequestGlobalMemoryDump(
       const base::trace_event::MemoryDumpRequestArgs& args,
       const base::trace_event::MemoryDumpCallback& callback) override;
@@ skipping 49 matching lines @@
 
   // Callback of TraceLog::Flush() for the local trace.
   void OnLocalTraceDataCollected(
       const scoped_refptr<base::RefCountedString>& events_str_ptr,
       bool has_more_events);
   // Callback of TraceLog::FlushMonitoring() for the local trace.
   void OnLocalMonitoringTraceDataCollected(
       const scoped_refptr<base::RefCountedString>& events_str_ptr,
       bool has_more_events);
 
+  // Adds the tracing agent with the specified agent name to the list of
+  // additional tracing agents.
+  void AddTracingAgent(const std::string& agent_name);
+
+  void OnStartAgentTracingAcked(const std::string& agent_name, bool success);
+
   void OnStopTracingAcked(
       TraceMessageFilter* trace_message_filter,
       const std::vector<std::string>& known_category_groups);
 
   void OnEndAgentTracingAcked(
       const std::string& agent_name,
       const std::string& events_label,
       const scoped_refptr<base::RefCountedString>& events_str_ptr);
 
   void OnCaptureMonitoringSnapshotAcked(
@@ skipping 10 matching lines @@
 
   void FinalizeGlobalMemoryDumpIfAllProcessesReplied();
 
   void OnWatchEventMatched();
 
   void SetEnabledOnFileThread(
       const base::trace_event::TraceConfig& trace_config,
       int mode,
       const base::Closure& callback);
   void SetDisabledOnFileThread(const base::Closure& callback);
-  void OnStartAgentTracingDone(
-      const base::trace_event::TraceConfig& trace_config);
+  void OnAllTracingAgentsStarted();
   void StopTracingAfterClockSync();
   void OnStopTracingDone();
   void OnStartMonitoringDone(
       const base::trace_event::TraceConfig& trace_config,
       const StartMonitoringDoneCallback& callback);
   void OnStopMonitoringDone(const StopMonitoringDoneCallback& callback);
 
   void OnMonitoringStateChanged(bool is_monitoring);
 
   int GetUniqueClockSyncID();
   // Issue clock sync markers to the tracing agents.
   void IssueClockSyncMarker();
   void OnClockSyncMarkerRecordedByAgent(
       int sync_id,
       const base::TimeTicks& issue_ts,
       const base::TimeTicks& issue_end_ts);
 
   typedef std::set<scoped_refptr<TraceMessageFilter>> TraceMessageFilterSet;
   TraceMessageFilterSet trace_message_filters_;
 
+  // Pending acks for StartTracing.
+  int pending_start_tracing_ack_count_;
+  base::OneShotTimer start_tracing_timer_;
+  StartTracingDoneCallback start_tracing_done_callback_;
+  scoped_ptr<base::trace_event::TraceConfig> start_tracing_trace_config_;
+
   // Pending acks for StopTracing.
   int pending_stop_tracing_ack_count_;
   TraceMessageFilterSet pending_stop_tracing_filters_;
 
   // Pending acks for CaptureMonitoringSnapshot.
   int pending_capture_monitoring_snapshot_ack_count_;
   TraceMessageFilterSet pending_capture_monitoring_filters_;
 
   // Pending acks for GetTraceLogStatus.
   int pending_trace_log_status_ack_count_;
   TraceMessageFilterSet pending_trace_log_status_filters_;
   float maximum_trace_buffer_usage_;
   size_t approximate_event_count_;
 
   // Pending acks for memory RequestGlobalDumpPoint.
   int pending_memory_dump_ack_count_;
   int failed_memory_dump_count_;
   TraceMessageFilterSet pending_memory_dump_filters_;
   uint64_t pending_memory_dump_guid_;
   base::trace_event::MemoryDumpCallback pending_memory_dump_callback_;
 
-  StartTracingDoneCallback start_tracing_done_callback_;
   std::vector<base::trace_event::TracingAgent*> additional_tracing_agents_;
   int clock_sync_id_;
   int pending_clock_sync_ack_count_;
   base::OneShotTimer clock_sync_timer_;
 
   bool is_tracing_;
   bool is_monitoring_;
 
   GetCategoriesDoneCallback pending_get_categories_done_callback_;
   GetTraceBufferUsageCallback pending_trace_buffer_usage_callback_;
 
   std::string watch_category_name_;
   std::string watch_event_name_;
   WatchEventCallback watch_event_callback_;
 
   base::ObserverList<TraceMessageFilterObserver>
       trace_message_filter_observers_;
 
   std::set<std::string> known_category_groups_;
   std::set<TracingUI*> tracing_uis_;
   scoped_refptr<TraceDataSink> trace_data_sink_;
   scoped_refptr<TraceDataSink> monitoring_data_sink_;
 
   DISALLOW_COPY_AND_ASSIGN(TracingControllerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_TRACING_TRACING_CONTROLLER_IMPL_H_