Add support for returning traces as streams in DevTools protocol

Source/core/inspector/InspectorTracingAgent.cpp

 //
 // 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.
 //
 
 #include "config.h"
 
 #include "core/inspector/InspectorTracingAgent.h"
 
@@ skipping 29 matching lines @@
     visitor->trace(m_workerAgent);
     visitor->trace(m_pageAgent);
     InspectorBaseAgent::trace(visitor);
 }
 
 void InspectorTracingAgent::restore()
 {
     emitMetadataEvents();
 }
 
-void InspectorTracingAgent::start(ErrorString*, const String* categoryFilter, const String*, const double*, PassRefPtrWillBeRawPtr<StartCallback> callback)
+void InspectorTracingAgent::start(ErrorString*, const String* categoryFilter, const String*, const double*, const String*, PassRefPtrWillBeRawPtr<StartCallback> callback)
 {
     ASSERT(m_state->getString(TracingAgentState::sessionId).isEmpty());
     m_state->setString(TracingAgentState::sessionId, IdentifiersFactory::createIdentifier());
     m_client->enableTracing(categoryFilter ? *categoryFilter : String());
     emitMetadataEvents();
     callback->sendSuccess();
 }
 
 void InspectorTracingAgent::end(ErrorString* errorString, PassRefPtrWillBeRawPtr<EndCallback> callback)
 {
@@ skipping 26 matching lines @@
     resetSessionId();
 }
 
 void InspectorTracingAgent::resetSessionId()
 {
     m_state->remove(TracingAgentState::sessionId);
     m_workerAgent->setTracingSessionId(sessionId());
 }
 
 }