[ios] Removed keyCode from FormActivityRegistered API.

ios/web/web_state/web_state_impl.h

 // Copyright 2013 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_WEB_STATE_WEB_STATE_IMPL_H_
 #define IOS_WEB_WEB_STATE_WEB_STATE_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 96 matching lines @@
   void OnPageLoaded(const GURL& url, bool load_success);
 
   // Called on form submission.
   void OnDocumentSubmitted(const std::string& form_name, bool user_initiated);
 
   // Called when form activity is registered.
   void OnFormActivityRegistered(const std::string& form_name,
                                 const std::string& field_name,
                                 const std::string& type,
                                 const std::string& value,
-                                int key_code,
                                 bool input_missing);
 
   // Called when new FaviconURL candidates are received.
   void OnFaviconUrlUpdated(const std::vector<FaviconURL>& candidates);
 
   // Called when the page requests a credential.
   void OnCredentialsRequested(int request_id,
                               const GURL& source_url,
                               bool unmediated,
                               const std::vector<std::string>& federations,
@@ skipping 245 matching lines @@
 
   // Image Fetcher used to images.
   std::unique_ptr<ImageDataFetcher> image_fetcher_;
 
   DISALLOW_COPY_AND_ASSIGN(WebStateImpl);
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_WEB_STATE_WEB_STATE_IMPL_H_