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

chrome/browser/devtools/remote_debugging_server.cc

Index: chrome/browser/devtools/remote_debugging_server.cc
diff --git a/chrome/browser/devtools/remote_debugging_server.cc b/chrome/browser/devtools/remote_debugging_server.cc
index 74f98b1901bfad4a377dab3960480c897eaaea30..f2fa75ae83ca69a1f4d00d9344d27eabad5c78f2 100644
--- a/chrome/browser/devtools/remote_debugging_server.cc
+++ b/chrome/browser/devtools/remote_debugging_server.cc
@@ -27,6 +27,7 @@
 #include "net/socket/tcp_server_socket.h"
 #include "third_party/WebKit/public/public_features.h"
 #include "ui/base/resource/resource_bundle.h"
+#include "v8/include/v8.h"
 
 namespace {
 
@@ -115,7 +116,8 @@ RemoteDebuggingServer::RemoteDebuggingServer(const std::string& ip,
       output_dir,
       debug_frontend_dir,
       version_info::GetProductNameAndVersionForUserAgent(),
-      ::GetUserAgent());
+      ::GetUserAgent(),
+      v8::V8::GetVersion());
 }
 
 RemoteDebuggingServer::~RemoteDebuggingServer() {