Remove deprecated method getKeyboardAccessory.

ios/web/public/web_state/crw_web_view_proxy.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_PUBLIC_WEB_STATE_CRW_WEB_VIEW_PROXY_H_
 #define IOS_WEB_PUBLIC_WEB_STATE_CRW_WEB_VIEW_PROXY_H_
 
 #import <UIKit/UIKit.h>
 
 #include "ios/web/public/web_view_type.h"
@@ skipping 31 matching lines @@
 // Unregister the registered insets for the given caller.
 - (void)unregisterInsetsForCaller:(id)caller;
 
 // Wrapper around the addSubview method of the webview.
 - (void)addSubview:(UIView*)view;
 
 // Returns YES if it makes sense to search for text right now.
 - (BOOL)hasSearchableTextContent;
 
 // Returns the currently visible keyboard accessory, or nil.
-// TODO(jdonnelly): Remove this once downstream code is updated to use
-// keyboardAccessory.
-- (UIView*)getKeyboardAccessory;
-
-// Returns the currently visible keyboard accessory, or nil.
 - (UIView*)keyboardAccessory;
 
 // Returns the currently visible keyboard input assistant item, or nil. Only
 // valid on iOS 9 or above.
 #if defined(__IPHONE_9_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_9_0
 - (UITextInputAssistantItem*)inputAssistantItem;
 #endif
 
 @end
 
 #endif  // IOS_WEB_PUBLIC_WEB_STATE_CRW_WEB_VIEW_PROXY_H_