[ios] Removed keyCode from FormActivityRegistered API.

ios/web/public/web_state/web_state_observer.h

 // 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.
 
 #ifndef IOS_WEB_PUBLIC_WEB_STATE_WEB_STATE_OBSERVER_H_
 #define IOS_WEB_PUBLIC_WEB_STATE_WEB_STATE_OBSERVER_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 11 matching lines @@
 class WebState;
 class TestWebState;
 class WebStateImpl;
 
 enum class PageLoadCompletionStatus : bool { SUCCESS = 0, FAILURE = 1 };
 
 // An observer API implemented by classes which are interested in various page
 // load events from WebState.
 class WebStateObserver {
  public:
-  // Key code associated to form events for which the key code is missing or
-  // irrelevant.
-  static int kInvalidFormKeyCode;
-
   // Returns the web state associated with this observer.
   WebState* web_state() const { return web_state_; }
 
   // This method is invoked when a load request is registered.
   virtual void ProvisionalNavigationStarted(const GURL& url) {}
 
   // This method is invoked when committed navigation items have been pruned.
   virtual void NavigationItemsPruned(size_t pruned_item_count) {}
 
   // This method is invoked when a navigation item has changed.
@@ skipping 24 matching lines @@
   // Called on history state change events.
   virtual void HistoryStateChanged() {}
 
   // Called on form submission. |user_initiated| is true if the user
   // interacted with the page.
   virtual void DocumentSubmitted(const std::string& form_name,
                                  bool user_initiated) {}
 
   // Called when the user is typing on a form field, with |error| indicating if
   // there is any error when parsing the form field information.
-  // |key_code| may be kInvalidFormKeyCode if there is no key code.
   virtual 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) {}
 
   // Invoked when new favicon URL candidates are received.
   virtual void FaviconUrlUpdated(const std::vector<FaviconURL>& candidates) {}
 
   // Notifies the observer that the credential manager API was invoked from
   // |source_url| to request a credential from the browser. If |unmediated|
   // is true, the browser MUST NOT show any UI to the user. If this means that
   // no credential will be returned to the page, so be it. Otherwise, the
   // browser may show the user any UI that is necessary to get a Credential and
@@ skipping 67 matching lines @@
   void ResetWebState();
 
   WebState* web_state_;
 
   DISALLOW_COPY_AND_ASSIGN(WebStateObserver);
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_PUBLIC_WEB_STATE_WEB_STATE_OBSERVER_H_