Tracing: re-use JSONTraceDataSink in DevTools' tracing handler...

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 41 matching lines @@
       public base::trace_event::TracingAgent {
  public:
   // Create an endpoint that may be supplied to any TraceDataSink to
   // dump the trace data to a callback.
   CONTENT_EXPORT static scoped_refptr<TraceDataEndpoint> CreateCallbackEndpoint(
       const base::Callback<void(std::unique_ptr<const base::DictionaryValue>,
                                 base::RefCountedString*)>& callback);
 
   CONTENT_EXPORT static scoped_refptr<TraceDataSink> CreateCompressedStringSink(
       scoped_refptr<TraceDataEndpoint> endpoint);
+  static scoped_refptr<TraceDataSink> CreateJSONSink(
+      scoped_refptr<TraceDataEndpoint> endpoint);
 
   static TracingControllerImpl* GetInstance();
 
   // TracingController implementation.
   bool GetCategories(const GetCategoriesDoneCallback& callback) override;
   bool StartTracing(const base::trace_event::TraceConfig& trace_config,
                     const StartTracingDoneCallback& callback) override;
   bool StopTracing(const scoped_refptr<TraceDataSink>& sink) override;
   bool GetTraceBufferUsage(
       const GetTraceBufferUsageCallback& callback) override;
@@ skipping 183 matching lines @@
   scoped_refptr<TraceDataSink> trace_data_sink_;
   scoped_refptr<TraceDataSink> monitoring_data_sink_;
   std::unique_ptr<base::DictionaryValue> metadata_;
 
   DISALLOW_COPY_AND_ASSIGN(TracingControllerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_TRACING_TRACING_CONTROLLER_IMPL_H_