Hooked the trace event argument whitelist up to the background_trace_manager

content/browser/tracing/tracing_controller_impl_data_sinks.cc

 // Copyright 2015 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.
 #include "content/browser/tracing/tracing_controller_impl.h"
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "content/public/browser/browser_thread.h"
 #include "third_party/zlib/zlib.h"
 
@@ skipping 263 matching lines @@
 
 }  // namespace
 
 scoped_refptr<TracingController::TraceDataSink>
 TracingController::CreateStringSink(
     const base::Callback<void(base::RefCountedString*)>& callback) {
   return new StringTraceDataSink(new StringTraceDataEndpoint(callback));
 }
 
 scoped_refptr<TracingController::TraceDataSink>
+TracingController::CreateStringSink(
+    scoped_refptr<TracingController::TraceDataEndpoint> endpoint) {
+  return new StringTraceDataSink(endpoint);
+}
+
+scoped_refptr<TracingController::TraceDataSink>
 TracingController::CreateCompressedStringSink(
     scoped_refptr<TracingController::TraceDataEndpoint> endpoint) {
   return new CompressedStringTraceDataSink(endpoint);
 }
 
 scoped_refptr<TracingController::TraceDataSink>
 TracingController::CreateFileSink(const base::FilePath& file_path,
                                   const base::Closure& callback) {
   return new StringTraceDataSink(
       CreateFileEndpoint(file_path, callback));
 }
 
 scoped_refptr<TracingController::TraceDataEndpoint>
 TracingController::CreateFileEndpoint(const base::FilePath& file_path,
                                       const base::Closure& callback) {
   return new FileTraceDataEndpoint(file_path, callback);
 }
 
 }  // namespace content