Add a inner text parameter to ContextMenuParams

ios/web/public/web_state/context_menu_params.h

 // Copyright 2016 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_CONTEXT_MENU_PARAMS_H_
 #define IOS_WEB_PUBLIC_WEB_STATE_CONTEXT_MENU_PARAMS_H_
 
 #import <UIKit/UIKit.h>
 
 #include "base/mac/scoped_nsobject.h"
 #include "base/strings/string16.h"
@@ skipping 20 matching lines @@
   GURL src_url;
 
   // The referrer policy to use when opening the link.
   web::ReferrerPolicy referrer_policy;
 
   // The view in which to present the menu.
   base::scoped_nsobject<UIView> view;
 
   // The location in |view| to present the menu.
   CGPoint location;
+
+  // The text associated with the link. It is either nil or nonempty (it can not
+  // be empty).
+  base::scoped_nsobject<NSString> link_text;
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_PUBLIC_WEB_STATE_CONTEXT_MENU_PARAMS_H_