[chromedriver] Implement reconnection to DevTools.

chrome/test/chromedriver/stub_devtools_client.h

 // 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.
 
 #ifndef CHROME_TEST_CHROMEDRIVER_STUB_DEVTOOLS_CLIENT_H_
 #define CHROME_TEST_CHROMEDRIVER_STUB_DEVTOOLS_CLIENT_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/test/chromedriver/devtools_client.h"
 
 namespace base {
 class DictionaryValue;
 }
 class Status;
 
 class StubDevToolsClient : public DevToolsClient {
  public:
   StubDevToolsClient();
   virtual ~StubDevToolsClient();
 
   // Overridden from DevToolsClient:
+  virtual Status ConnectIfNecessary() OVERRIDE;
   virtual Status SendCommand(const std::string& method,
                              const base::DictionaryValue& params) OVERRIDE;
   virtual Status SendCommandAndGetResult(
       const std::string& method,
       const base::DictionaryValue& params,
       scoped_ptr<base::DictionaryValue>* result) OVERRIDE;
   virtual void AddListener(DevToolsEventListener* listener) OVERRIDE;
   virtual Status HandleEventsUntil(
       const ConditionalFunc& conditional_func) OVERRIDE;
 };
 
 #endif  // CHROME_TEST_CHROMEDRIVER_STUB_DEVTOOLS_CLIENT_H_