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

chromecast/browser/devtools/remote_debugging_server.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 "chromecast/browser/devtools/remote_debugging_server.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "build/build_config.h"
 #include "chromecast/base/pref_names.h"
 #include "chromecast/browser/cast_browser_process.h"
 #include "chromecast/browser/devtools/cast_devtools_manager_delegate.h"
 #include "chromecast/common/cast_content_client.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/devtools_agent_host.h"
 #include "content/public/browser/devtools_socket_factory.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/user_agent.h"
 #include "net/base/net_errors.h"
 #include "net/log/net_log_source.h"
 #include "net/socket/tcp_server_socket.h"
+#include "v8/include/v8.h"
 
 #if defined(OS_ANDROID)
 #include "content/public/browser/android/devtools_auth.h"
 #include "net/socket/unix_domain_server_socket_posix.h"
 #endif  // defined(OS_ANDROID)
 
 namespace chromecast {
 namespace shell {
 
 namespace {
@@ skipping 118 matching lines @@
 
 void RemoteDebuggingServer::OnEnabledChanged() {
   bool enabled = *pref_enabled_ && port_ != 0;
   if (enabled && !is_started_) {
     content::DevToolsAgentHost::StartRemoteDebuggingServer(
         CreateSocketFactory(port_),
         GetFrontendUrl(),
         base::FilePath(),
         base::FilePath(),
         std::string(),
-        GetUserAgent());
+        GetUserAgent(),
+        v8::V8::GetVersion());
     LOG(INFO) << "Devtools started: port=" << port_;
   } else if (!enabled && is_started_) {
     LOG(INFO) << "Stop devtools: port=" << port_;
     is_started_ = false;
     content::DevToolsAgentHost::StopRemoteDebuggingServer();
   }
 }
 
 }  // namespace shell
 }  // namespace chromecast