Add a mechanism to let TracingController invoke JavaScript via TracingUI

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>
 
 #include "base/files/file_path.h"
 #include "base/lazy_instance.h"
 #include "content/public/browser/tracing_controller.h"
 
 namespace base {
 class RefCountedString;
 }
 
 namespace content {
 
 class TraceMessageFilter;
+class TracingUI;
 
 class TracingControllerImpl : public TracingController {
  public:
   static TracingControllerImpl* GetInstance();
 
   // TracingController implementation.
   virtual bool GetCategories(
       const GetCategoriesDoneCallback& callback) OVERRIDE;
   virtual bool EnableRecording(
       const std::string& category_filter,
@@ skipping 14 matching lines @@
   virtual bool CaptureMonitoringSnapshot(
       const base::FilePath& result_file_path,
       const TracingFileResultCallback& callback) OVERRIDE;
   virtual bool GetTraceBufferPercentFull(
       const GetTraceBufferPercentFullCallback& callback) OVERRIDE;
   virtual bool SetWatchEvent(const std::string& category_name,
                              const std::string& event_name,
                              const WatchEventCallback& callback) OVERRIDE;
   virtual bool CancelWatchEvent() OVERRIDE;
 
+  void RegisterTracingUI(TracingUI* tracing_ui);
+  void UnregisterTracingUI(TracingUI* tracing_ui);
+
  private:
   typedef std::set<scoped_refptr<TraceMessageFilter> > TraceMessageFilterSet;
   class ResultFile;
 
   friend struct base::DefaultLazyInstanceTraits<TracingControllerImpl>;
   friend class TraceMessageFilter;
 
   TracingControllerImpl();
   virtual ~TracingControllerImpl();
 
@@ skipping 62 matching lines @@
   void OnEnableRecordingDone(const std::string& category_filter,
                              int trace_options,
                              const EnableRecordingDoneCallback& callback);
   void OnDisableRecordingDone(const base::FilePath& result_file_path,
                               const TracingFileResultCallback& callback);
   void OnEnableMonitoringDone(const std::string& category_filter,
                               int trace_options,
                               const EnableMonitoringDoneCallback& callback);
   void OnDisableMonitoringDone(const DisableMonitoringDoneCallback& callback);
 
+  void OnMonitoringStateChanged(bool is_monitoring);
+
   TraceMessageFilterSet trace_message_filters_;
 
   // Pending acks for DisableRecording.
   int pending_disable_recording_ack_count_;
   TraceMessageFilterSet pending_disable_recording_filters_;
   // 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_;
 
   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_