Add Tracing.requestMemoryDump method stub to DevTools API

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/strings/string_split.h"
@@ skipping 135 matching lines @@
 void TracingHandler::OnCategoriesReceived(
     DevToolsCommandId command_id,
     const std::set<std::string>& category_set) {
   std::vector<std::string> categories;
   for (const std::string& category : category_set)
     categories.push_back(category);
   client_->SendGetCategoriesResponse(command_id,
       GetCategoriesResponse::Create()->set_categories(categories));
 }
 
+Response TracingHandler::RequestMemoryDump(DevToolsCommandId command_id) {
+  return Response::InternalError("Not implemented");
+}
+
 void TracingHandler::SetupTimer(double usage_reporting_interval) {
   if (usage_reporting_interval == 0) return;
 
   if (usage_reporting_interval < kMinimumReportingInterval)
       usage_reporting_interval = kMinimumReportingInterval;
 
   base::TimeDelta interval = base::TimeDelta::FromMilliseconds(
       std::ceil(usage_reporting_interval));
   buffer_usage_poll_timer_.reset(new base::Timer(
       FROM_HERE, interval,
@@ skipping 12 matching lines @@
   did_initiate_recording_ = false;
 }
 
 bool TracingHandler::IsRecording() const {
   return TracingController::GetInstance()->IsRecording();
 }
 
 }  // namespace tracing
 }  // namespace devtools
 }  // namespace content