chrome: Cleanup class/struct forward declarations

chrome/browser/password_manager/chrome_password_manager_client.h

 // Copyright 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 CHROME_BROWSER_PASSWORD_MANAGER_CHROME_PASSWORD_MANAGER_CLIENT_H_
 #define CHROME_BROWSER_PASSWORD_MANAGER_CHROME_PASSWORD_MANAGER_CLIENT_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 15 matching lines @@
 
 namespace autofill {
 class PasswordGenerationPopupObserver;
 class PasswordGenerationPopupControllerImpl;
 }
 
 namespace content {
 class WebContents;
 }
 
-namespace password_manager {
-struct CredentialInfo;
-class PasswordGenerationManager;
-class PasswordManagerDriver;
-}
-
 // ChromePasswordManagerClient implements the PasswordManagerClient interface.
 class ChromePasswordManagerClient
     : public password_manager::PasswordManagerClient,
       public content::WebContentsObserver,
       public content::WebContentsUserData<ChromePasswordManagerClient>,
       public autofill::mojom::PasswordManagerClient {
  public:
   ~ChromePasswordManagerClient() override;
 
   // PasswordManagerClient implementation.
@@ skipping 132 matching lines @@
   std::unique_ptr<password_manager::LogManager> log_manager_;
 
   // Set during 'NotifyUserCouldBeAutoSignedIn' in order to store the
   // form for potential use during 'NotifySuccessfulLoginWithExistingPassword'.
   std::unique_ptr<autofill::PasswordForm> possible_auto_sign_in_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromePasswordManagerClient);
 };
 
 #endif  // CHROME_BROWSER_PASSWORD_MANAGER_CHROME_PASSWORD_MANAGER_CLIENT_H_