[ios] Removed keyCode from FormActivityRegistered API.

ios/web/public/web_state/web_state_observer_bridge.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_WEB_PUBLIC_WEB_STATE_WEB_STATE_OBSERVER_BRIDGE_H_
 #define IOS_WEB_PUBLIC_WEB_STATE_WEB_STATE_OBSERVER_BRIDGE_H_
 
 #import <Foundation/Foundation.h>
 
 #include <string>
@@ skipping 35 matching lines @@
     didSubmitDocumentWithFormNamed:(const std::string&)formName
                      userInitiated:(BOOL)userInitiated;
 
 // Invoked by WebStateObserverBridge::FormActivityRegistered.
 // TODO(ios): Method should take data transfer object rather than parameters.
 - (void)webState:(web::WebState*)webState
     didRegisterFormActivityWithFormNamed:(const std::string&)formName
                                fieldName:(const std::string&)fieldName
                                     type:(const std::string&)type
                                    value:(const std::string&)value
-                                 keyCode:(int)keyCode
                             inputMissing:(BOOL)inputMissing;
 
 // Invoked by WebStateObserverBridge::FaviconUrlUpdated.
 - (void)webState:(web::WebState*)webState
     didUpdateFaviconURLCandidates:
         (const std::vector<web::FaviconURL>&)candidates;
 
 // Note: after |webStateDestroyed:| is invoked, the WebState being observed
 // is no longer valid.
 - (void)webStateDestroyed:(web::WebState*)webState;
@@ skipping 28 matching lines @@
       web::PageLoadCompletionStatus load_completion_status) override;
   void InsterstitialDismissed() override;
   void UrlHashChanged() override;
   void HistoryStateChanged() override;
   void DocumentSubmitted(const std::string& form_name,
                          bool user_initiated) override;
   void FormActivityRegistered(const std::string& form_name,
                               const std::string& field_name,
                               const std::string& type,
                               const std::string& value,
-                              int key_code,
                               bool input_missing) override;
   void FaviconUrlUpdated(const std::vector<FaviconURL>& candidates) override;
   void WebStateDestroyed() override;
   void DidStartLoading() override;
   void DidStopLoading() override;
 
  private:
   base::WeakNSProtocol<id<CRWWebStateObserver>> observer_;
   DISALLOW_COPY_AND_ASSIGN(WebStateObserverBridge);
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_PUBLIC_WEB_STATE_WEB_STATE_OBSERVER_BRIDGE_H_