Eliminate unnecessary forward declarations from components/password_manager

components/password_manager/core/browser/password_manager.h

 // Copyright (c) 2012 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 COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_MANAGER_H_
 #define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_MANAGER_H_
 
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/observer_list.h"
 #include "base/prefs/pref_member.h"
 #include "base/stl_util.h"
 #include "components/autofill/core/common/password_form.h"
 #include "components/autofill/core/common/password_form_fill_data.h"
 #include "components/password_manager/core/browser/login_model.h"
 #include "components/password_manager/core/browser/password_form_manager.h"
 
 class PrefRegistrySimple;
 
-namespace content {
-class WebContents;
-}
-
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
 namespace password_manager {
 
 class BrowserSavePasswordProgressLogger;
 class PasswordManagerClient;
 class PasswordManagerDriver;
-class PasswordManagerTest;
 class PasswordFormManager;
 
 // Per-tab password manager. Handles creation and management of UI elements,
 // receiving password form data from the renderer and managing the password
 // database through the PasswordStore. The PasswordManager is a LoginModel
 // for purposes of supporting HTTP authentication dialogs.
 class PasswordManager : public LoginModel {
  public:
   static const char kOtherPossibleUsernamesExperiment[];
 
@@ skipping 152 matching lines @@
   // the recorded forms matches the login form from the previous page
   // (to see if the login was a failure), and clears the vector.
   std::vector<autofill::PasswordForm> all_visible_forms_;
 
   DISALLOW_COPY_AND_ASSIGN(PasswordManager);
 };
 
 }  // namespace password_manager
 
 #endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_MANAGER_H_