Delete obviously unneeded forward declarations in chrome/browser/*.h.

chrome/browser/toolbar_model.h

 // Copyright (c) 2010 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_TOOLBAR_MODEL_H__
 #define CHROME_BROWSER_TOOLBAR_MODEL_H__
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 
 class Browser;
 class NavigationController;
-class NavigationEntry;
 
 // This class is the model used by the toolbar, location bar and autocomplete
 // edit.  It populates its states from the current navigation entry retrieved
 // from the navigation controller returned by GetNavigationController().
 class ToolbarModel {
  public:
   // TODO(wtc): unify ToolbarModel::SecurityLevel with SecurityStyle.  We
   // don't need two sets of security UI levels.  SECURITY_STYLE_AUTHENTICATED
   // needs to be refined into three levels: warning, standard, and EV.
   enum SecurityLevel {
@@ skipping 37 matching lines @@
 
   Browser* browser_;
 
   // Whether the text in the location bar is currently being edited.
   bool input_in_progress_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(ToolbarModel);
 };
 
 #endif  // CHROME_BROWSER_TOOLBAR_MODEL_H__