WIP: The tracing service prototype

components/tracing/child/child_trace_message_filter.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 COMPONENTS_TRACING_CHILD_CHILD_TRACE_MESSAGE_FILTER_H_
 #define COMPONENTS_TRACING_CHILD_CHILD_TRACE_MESSAGE_FILTER_H_
 
 #include <stdint.h>
 
 #include "base/bind.h"
@@ skipping 25 matching lines @@
     return ipc_task_runner_;
   }
 
  protected:
   ~ChildTraceMessageFilter() override;
 
  private:
   friend class ChildTraceMessageFilterTest;
 
   // Message handlers.
-  void OnBeginTracing(const std::string& trace_config_str,
-                      base::TimeTicks browser_time,
-                      uint64_t tracing_process_id);
-  void OnEndTracing();
-  void OnCancelTracing();
-  void OnGetTraceLogStatus();
-  void OnSetWatchEvent(const std::string& category_name,
-                       const std::string& event_name);
-  void OnCancelWatchEvent();
-  void OnWatchEventMatched();
   void OnSetUMACallback(const std::string& histogram_name,
                         int histogram_lower_value,
                         int histogram_upper_value,
                         bool repeat);
   void OnClearUMACallback(const std::string& histogram_name);
   void OnHistogramChanged(const std::string& histogram_name,
                           base::Histogram::Sample reference_lower_value,
                           base::Histogram::Sample reference_upper_value,
                           bool repeat,
                           base::Histogram::Sample actual_value);
   void SendTriggerMessage(const std::string& histogram_name);
   void SendAbortBackgroundTracingMessage();
 
-  // Callback from trace subsystem.
-  void OnTraceDataCollected(
-      const scoped_refptr<base::RefCountedString>& events_str_ptr,
-      bool has_more_events);
-
   void SetSenderForTesting(IPC::Sender* sender);
 
-  uint8_t enabled_tracing_modes_;
-
   IPC::Sender* sender_;
   base::SingleThreadTaskRunner* ipc_task_runner_;
 
   base::Time histogram_last_changed_;
 
   DISALLOW_COPY_AND_ASSIGN(ChildTraceMessageFilter);
 };
 
 }  // namespace tracing
 
 #endif  // COMPONENTS_TRACING_CHILD_CHILD_TRACE_MESSAGE_FILTER_H_