ios: Cleanup class/struct forward declarations

ios/chrome/browser/browser_state/chrome_browser_state_io_data.h

 // Copyright 2015 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 IOS_CHROME_BROWSER_BROWSER_STATE_CHROME_BROWSER_STATE_IO_DATA_H_
 #define IOS_CHROME_BROWSER_BROWSER_STATE_CHROME_BROWSER_STATE_IO_DATA_H_
 
 #include <map>
 #include <memory>
 #include <string>
@@ skipping 24 matching lines @@
 namespace content_settings {
 class CookieSettings;
 }
 
 namespace ios {
 class ChromeBrowserState;
 enum class ChromeBrowserStateType;
 }
 
 namespace net {
-class CertVerifier;
 class ChannelIDService;
 class CookieStore;
 class HttpServerProperties;
 class HttpTransactionFactory;
 class ProxyConfigService;
 class ProxyService;
 class ReportSender;
-class ServerBoundCertService;
 class SSLConfigService;
 class TransportSecurityPersister;
 class TransportSecurityState;
 class URLRequestJobFactoryImpl;
 }  // namespace net
 
 // Conceptually speaking, the ChromeBrowserStateIOData represents data that
 // lives on the IO thread that is owned by a ChromeBrowserState, such as, but
 // not limited to, network objects like CookieMonster, HttpTransactionFactory,
 // etc.
@@ skipping 241 matching lines @@
 
   mutable std::unique_ptr<IOSChromeHttpUserAgentSettings>
       chrome_http_user_agent_settings_;
 
   const ios::ChromeBrowserStateType browser_state_type_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserStateIOData);
 };
 
 #endif  // IOS_CHROME_BROWSER_BROWSER_STATE_CHROME_BROWSER_STATE_IO_DATA_H_