Eliminate unnecessary forward declarations from components/password_manager

chrome/browser/ui/login/login_prompt.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 CHROME_BROWSER_UI_LOGIN_LOGIN_PROMPT_H_
 #define CHROME_BROWSER_UI_LOGIN_LOGIN_PROMPT_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/synchronization/lock.h"
 #include "components/password_manager/core/browser/password_manager.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/resource_dispatcher_host_login_delegate.h"
 
 class GURL;
 
 namespace content {
 class RenderViewHostDelegate;
 class NotificationRegistrar;
+class WebContents;
 }  // namespace content
 
 namespace net {
 class AuthChallengeInfo;
 class HttpNetworkSession;
 class URLRequest;
 }  // namespace net
 
 // This is the base implementation for the OS-specific classes that route
 // authentication info to the net::URLRequest that needs it. These functions
@@ skipping 181 matching lines @@
 // Helper to remove the ref from an net::URLRequest to the LoginHandler.
 // Should only be called from the IO thread, since it accesses an
 // net::URLRequest.
 void ResetLoginHandlerForRequest(net::URLRequest* request);
 
 // Get the signon_realm under which the identity should be saved.
 std::string GetSignonRealm(const GURL& url,
                            const net::AuthChallengeInfo& auth_info);
 
 #endif  // CHROME_BROWSER_UI_LOGIN_LOGIN_PROMPT_H_