[chromedriver] Implement reconnection to DevTools.

chrome/test/chromedriver/stub_devtools_client.cc

 // Copyright (c) 2013 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 "chrome/test/chromedriver/stub_devtools_client.h"
 
 #include "base/values.h"
 #include "chrome/test/chromedriver/status.h"
 
 StubDevToolsClient::StubDevToolsClient() {}
 
 StubDevToolsClient::~StubDevToolsClient() {}
 
+Status StubDevToolsClient::ConnectIfNecessary() {
+  return Status(kOk);
+}
+
 Status StubDevToolsClient::SendCommand(const std::string& method,
                                        const base::DictionaryValue& params) {
   scoped_ptr<base::DictionaryValue> result;
   return SendCommandAndGetResult(method, params, &result);
 }
 
 Status StubDevToolsClient::SendCommandAndGetResult(
       const std::string& method,
       const base::DictionaryValue& params,
       scoped_ptr<base::DictionaryValue>* result) {
   return Status(kOk);
 }
 
 void StubDevToolsClient::AddListener(DevToolsEventListener* listener) {}
 
 Status StubDevToolsClient::HandleEventsUntil(
       const ConditionalFunc& conditional_func) {
   return Status(kOk);
 }