chrome: Cleanup class/struct forward declarations

chrome/test/chromedriver/chrome/web_view.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_CHROME_WEB_VIEW_H_
 #define CHROME_TEST_CHROMEDRIVER_CHROME_WEB_VIEW_H_
 
 #include <list>
 #include <memory>
 #include <string>
 #include <vector>
 
 
 namespace base {
 class DictionaryValue;
 class FilePath;
 class ListValue;
 class TimeDelta;
 class Value;
 }
 
-class DevToolsClient;
 struct Geoposition;
 class JavaScriptDialogManager;
 struct KeyEvent;
 struct MouseEvent;
 struct NetworkConditions;
 class Status;
 class Timeout;
 struct TouchEvent;
 
 class WebView {
@@ skipping 159 matching lines @@
   virtual Status SynthesizePinchGesture(int x, int y, double scale_factor) = 0;
 
   virtual Status GetScreenOrientation(std::string* orientation) = 0;
 
   virtual Status SetScreenOrientation(std::string orientation) = 0;
 
   virtual Status DeleteScreenOrientation() = 0;
 };
 
 #endif  // CHROME_TEST_CHROMEDRIVER_CHROME_WEB_VIEW_H_