[DevTools]: Expose V8 version in /json/version

content/browser/devtools/devtools_manager.cc

 // Copyright (c) 2012 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/devtools_manager.h"
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "content/browser/devtools/devtools_agent_host_impl.h"
 #include "content/browser/devtools/devtools_http_handler.h"
 #include "content/browser/loader/netlog_observer.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/devtools_socket_factory.h"
 
 namespace content {
 
 // static
 void DevToolsAgentHost::StartRemoteDebuggingServer(
       std::unique_ptr<DevToolsSocketFactory> server_socket_factory,
       const std::string& frontend_url,
       const base::FilePath& active_port_output_directory,
       const base::FilePath& debug_frontend_dir,
       const std::string& product_name,
-      const std::string& user_agent) {
+      const std::string& user_agent,
+      const std::string& v8_version) {
   DevToolsManager* manager = DevToolsManager::GetInstance();
   if (!manager->delegate())
     return;
   manager->SetHttpHandler(base::WrapUnique(new DevToolsHttpHandler(
       manager->delegate(), std::move(server_socket_factory), frontend_url,
       active_port_output_directory, debug_frontend_dir, product_name,
-      user_agent)));
+      user_agent, v8_version)));
 }
 
 // static
 void DevToolsAgentHost::StopRemoteDebuggingServer() {
   DevToolsManager* manager = DevToolsManager::GetInstance();
   manager->SetHttpHandler(nullptr);
 }
 
 // static
 DevToolsManager* DevToolsManager::GetInstance() {
   return base::Singleton<DevToolsManager>::get();
 }
 
 DevToolsManager::DevToolsManager()
     : delegate_(GetContentClient()->browser()->GetDevToolsManagerDelegate()) {
 }
 
 DevToolsManager::~DevToolsManager() {
 }
 
 void DevToolsManager::SetHttpHandler(
     std::unique_ptr<DevToolsHttpHandler> http_handler) {
   http_handler_ = std::move(http_handler);
 }
 
 }  // namespace content