[DevTools] Migrate DevToolsTracingHandler to generated handler.

content/browser/devtools/protocol/tracing_handler.h

 // Copyright 2014 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_DEVTOOLS_PROTOCOL_TRACING_HANDLER_H_
 #define CONTENT_BROWSER_DEVTOOLS_PROTOCOL_TRACING_HANDLER_H_
 
+#include <set>
+#include <string>
+
+#include "base/debug/trace_event.h"
+#include "base/memory/weak_ptr.h"
 #include "content/browser/devtools/protocol/devtools_protocol_handler_impl.h"
+#include "content/public/browser/tracing_controller.h"
+
+namespace base {
+class RefCountedString;
+class Timer;
+}
 
 namespace content {
 namespace devtools {
 namespace tracing {
 
 class TracingHandler {
  public:
   typedef DevToolsProtocolClient::Response Response;
 
-  TracingHandler();
+  enum Target { Browser, Renderer };
+  explicit TracingHandler(Target target);
   virtual ~TracingHandler();
 
   void SetClient(scoped_ptr<Client> client);
+  void Detached();
 
-  // TODO(dgozman): remove sync version after migration.
-  Response Start(const std::string& categories,
-                 const std::string& options,
-                 const double* buffer_usage_reporting_interval);
+  void OnTraceDataCollected(const std::string& trace_fragment);
+  void OnTraceComplete();
+
   scoped_refptr<DevToolsProtocol::Response> Start(
       const std::string& categories,
       const std::string& options,
       const double* buffer_usage_reporting_interval,
       scoped_refptr<DevToolsProtocol::Command> command);
-
-  // TODO(dgozman): remove sync version after migration.
-  Response End();
   scoped_refptr<DevToolsProtocol::Response> End(
       scoped_refptr<DevToolsProtocol::Command> command);
-
   scoped_refptr<DevToolsProtocol::Response> GetCategories(
       scoped_refptr<DevToolsProtocol::Command> command);
 
  private:
+  void OnRecordingEnabled(scoped_refptr<DevToolsProtocol::Command> command);
+  void OnBufferUsage(float usage);
+
+  void OnCategoriesReceived(scoped_refptr<DevToolsProtocol::Command> command,
+                            const std::set<std::string>& category_set);
+
+  base::debug::TraceOptions TraceOptionsFromString(const std::string& options);
+
+  void SetupTimer(double usage_reporting_interval);
+
+  void DisableRecording(bool abort);
+
+  scoped_ptr<base::Timer> buffer_usage_poll_timer_;
+  Target target_;
+  bool is_recording_;
+
   scoped_ptr<Client> client_;
+  base::WeakPtrFactory<TracingHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TracingHandler);
 };
 
 }  // namespace tracing
 }  // namespace devtools
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_PROTOCOL_TRACING_HANDLER_H_