[ios] Removed keyCode from FormActivityRegistered API.

ios/web/web_state/web_state_observer_bridge.mm

 // 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.
 
 #import "ios/web/public/web_state/web_state_observer_bridge.h"
 
 namespace web {
 
 WebStateObserverBridge::WebStateObserverBridge(web::WebState* webState,
                                                id<CRWWebStateObserver> observer)
@@ skipping 67 matching lines @@
         didSubmitDocumentWithFormNamed:form_name
                          userInitiated:user_initiated];
   }
 }
 
 void WebStateObserverBridge::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) {
   SEL selector = @selector(webState:
       didRegisterFormActivityWithFormNamed:
                                  fieldName:
                                       type:
                                      value:
-                                   keyCode:
                               inputMissing:);
   if ([observer_ respondsToSelector:selector]) {
     [observer_ webState:web_state()
         didRegisterFormActivityWithFormNamed:form_name
                                    fieldName:field_name
                                         type:type
                                        value:value
-                                     keyCode:key_code
                                 inputMissing:input_missing];
   }
 }
 
 void WebStateObserverBridge::FaviconUrlUpdated(
     const std::vector<FaviconURL>& candidates) {
   SEL selector = @selector(webState:didUpdateFaviconURLCandidates:);
   if ([observer_ respondsToSelector:selector])
     [observer_ webState:web_state() didUpdateFaviconURLCandidates:candidates];
 }
 
 void WebStateObserverBridge::WebStateDestroyed() {
   SEL selector = @selector(webStateDestroyed:);
   if ([observer_ respondsToSelector:selector]) {
     // |webStateDestroyed:| may delete |this|, so don't expect |this| to be
     // valid afterwards.
     [observer_ webStateDestroyed:web_state()];
   }
 }
 
 }  // namespace web