chrome: Cleanup class/struct forward declarations

chrome/browser/chromeos/input_method/input_method_engine.h

 // Copyright 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_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_ENGINE_H_
 #define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_ENGINE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <map>
 #include <string>
 #include <vector>
 #include "base/time/time.h"
 #include "chrome/browser/ui/input_method/input_method_engine_base.h"
 #include "ui/base/ime/chromeos/input_method_descriptor.h"
 #include "ui/base/ime/chromeos/input_method_manager.h"
 #include "ui/base/ime/ime_engine_handler_interface.h"
 #include "url/gurl.h"
 
-class Profile;
-
 namespace ui {
 class CandidateWindow;
 struct CompositionText;
 class IMEEngineHandlerInterface;
 class KeyEvent;
 
 namespace ime {
 struct InputMethodMenuItem;
 }  // namespace ime
 }  // namespace ui
@@ skipping 119 matching lines @@
   // Mapping of candidate index to candidate id.
   std::vector<int> candidate_ids_;
 
   // Mapping of candidate id to index.
   std::map<int, int> candidate_indexes_;
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_ENGINE_H_