[ios] Removed keyCode from FormActivityRegistered API.

ios/chrome/browser/autofill/form_input_accessory_view_controller.mm

 // 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.
 
 #import "ios/chrome/browser/autofill/form_input_accessory_view_controller.h"
 
 #include <memory>
 
 #include "base/ios/block_types.h"
 #include "base/ios/ios_util.h"
@@ skipping 466 matching lines @@
 
 - (void)webStateDidLoadPage:(web::WebState*)webState {
   [self reset];
 }
 
 - (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 {
   web::URLVerificationTrustLevel trustLevel;
   const GURL pageURL(webState->GetCurrentURL(&trustLevel));
   if (inputMissing || trustLevel != web::URLVerificationTrustLevel::kAbsolute ||
       !web::UrlHasWebScheme(pageURL) || !webState->ContentIsHTML()) {
     [self reset];
     return;
   }
 
   if ((type == "blur" || type == "change")) {
@@ skipping 148 matching lines @@
 // that we don't present our custom view over the keyboard.
 - (void)textInputDidBeginEditing:(NSNotification*)notification {
   [self reset];
 }
 
 - (void)keyboardDidHide:(NSNotification*)notification {
   _keyboardFrame = CGRectZero;
 }
 
 @end