Hooked the trace event argument whitelist up to the background_trace_manager

content/public/browser/tracing_controller.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_PUBLIC_BROWSER_TRACING_CONTROLLER_H_
 #define CONTENT_PUBLIC_BROWSER_TRACING_CONTROLLER_H_
 
 #include <set>
 #include <string>
 
@@ skipping 47 matching lines @@
    protected:
     friend class base::RefCountedThreadSafe<TraceDataEndpoint>;
     virtual ~TraceDataEndpoint() {}
   };
 
   // Create a trace sink that may be supplied to DisableRecording or
   // CaptureMonitoringSnapshot to capture the trace data as a string.
   CONTENT_EXPORT static scoped_refptr<TraceDataSink> CreateStringSink(
       const base::Callback<void(base::RefCountedString*)>& callback);
 
+  CONTENT_EXPORT static scoped_refptr<TraceDataSink> CreateStringSink(
+      scoped_refptr<TraceDataEndpoint> endpoint);
+
   CONTENT_EXPORT static scoped_refptr<TraceDataSink> CreateCompressedStringSink(
       scoped_refptr<TraceDataEndpoint> endpoint);
 
   // Create a trace sink that may be supplied to DisableRecording or
   // CaptureMonitoringSnapshot to dump the trace data to a file.
   CONTENT_EXPORT static scoped_refptr<TraceDataSink> CreateFileSink(
       const base::FilePath& file_path,
       const base::Closure& callback);
 
   // Create an endpoint that may be supplied to any TraceDataSink to
@@ skipping 124 matching lines @@
   // watch event callback.
   virtual bool CancelWatchEvent() = 0;
 
  protected:
   virtual ~TracingController() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_TRACING_CONTROLLER_H_