[chromedriver] Separate stuff of chrome from chromedriver.

chrome/test/chromedriver/stub_chrome.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_chrome.h"
-#include "chrome/test/chromedriver/status.h"
-#include "chrome/test/chromedriver/web_view.h"
-
-StubChrome::StubChrome() {}
-
-StubChrome::~StubChrome() {}
-
-std::string StubChrome::GetVersion() {
-  return "";
-}
-
-Status StubChrome::GetWebViews(std::list<WebView*>* web_views) {
-  return Status(kOk);
-}
-
-Status StubChrome::IsJavaScriptDialogOpen(bool* is_open) {
-  return Status(kOk);
-}
-
-Status StubChrome::GetJavaScriptDialogMessage(std::string* message) {
-  return Status(kOk);
-}
-
-Status StubChrome::HandleJavaScriptDialog(
-    bool accept,
-    const std::string& prompt_text) {
-  return Status(kOk);
-}
-
-std::string StubChrome::GetOperatingSystemName() {
-  return "";
-}
-
-Status StubChrome::Quit() {
-  return Status(kOk);
-}