Eliminate unnecessary forward declarations from components/password_manager

components/password_manager/content/browser/credential_manager_password_form_manager.h

 // Copyright (c) 2014 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_CONTENT_BROWSER_CREDENTIAL_MANAGER_PASSWORD_FORM_MANAGER_H_
 #define COMPONENTS_PASSWORD_MANAGER_CONTENT_BROWSER_CREDENTIAL_MANAGER_PASSWORD_FORM_MANAGER_H_
 
 #include "components/password_manager/core/browser/password_form_manager.h"
 
 namespace autofill {
 struct PasswordForm;
 }
 
-namespace content {
-class WebContents;
-}  // namespace content
-
 namespace password_manager {
 
 class ContentCredentialManagerDispatcher;
-class PasswordManager;
 class PasswordManagerClient;
 
 // A PasswordFormManager built to handle PassworForm objects synthesized
 // by the Credential Manager API.
 class CredentialManagerPasswordFormManager : public PasswordFormManager {
  public:
   // Given a |client| and an |observed_form|, kick off the process of fetching
   // matching logins from the password store; if |observed_form| doesn't map to
   // a blacklisted origin, provisionally save it. Once saved, let the dispatcher
   // know that it's safe to poke at the UI.
@@ skipping 10 matching lines @@
 
  private:
   ContentCredentialManagerDispatcher* dispatcher_;
 
   DISALLOW_COPY_AND_ASSIGN(CredentialManagerPasswordFormManager);
 };
 
 }  // namespace password_manager
 
 #endif  // COMPONENTS_PASSWORD_MANAGER_CONTENT_BROWSER_CREDENTIAL_MANAGER_PASSWORD_FORM_MANAGER_H_