[DevTools] Filter any messages from previous sessions in DevToolsAgentHostImpl

content/browser/devtools/protocol/tracing_handler.cc

 // 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 "content/browser/devtools/protocol/tracing_handler.h"
 
 #include <cmath>
 
 #include "base/bind.h"
 #include "base/format_macros.h"
@@ skipping 95 matching lines @@
 
 void TracingHandler::OnTraceDataCollected(const std::string& trace_fragment) {
   // Hand-craft protocol notification message so we can substitute JSON
   // that we already got as string as a bare object, not a quoted string.
   std::string message(
       "{ \"method\": \"Tracing.dataCollected\", \"params\": { \"value\": [");
   const size_t messageSuffixSize = 10;
   message.reserve(message.size() + trace_fragment.size() + messageSuffixSize);
   message += trace_fragment;
   message += "] } }";
-  client_->SendRawMessage(message);
+  client_->SendRawNotification(message);
 }
 
 void TracingHandler::OnTraceComplete() {
   client_->TracingComplete(TracingCompleteParams::Create());
 }
 
 void TracingHandler::OnTraceToStreamComplete(const std::string& stream_handle) {
   client_->TracingComplete(
       TracingCompleteParams::Create()->set_stream(stream_handle));
 }
@@ skipping 136 matching lines @@
 }
 
 bool TracingHandler::IsStartupTracingActive() {
   return ::tracing::TraceConfigFile::GetInstance()->IsEnabled() &&
       TracingController::GetInstance()->IsRecording();
 }
 
 }  // namespace tracing
 }  // namespace devtools
 }  // namespace content