Reuse context menu in StaticHTMLViewController

ios/web/public/web_state/ui/crw_native_content.h

 // Copyright 2012 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_UI_CRW_NATIVE_CONTENT_H_
 #define IOS_WEB_PUBLIC_WEB_STATE_UI_CRW_NATIVE_CONTENT_H_
 
 #import <UIKit/UIKit.h>
 
 #import "ios/web/public/block_types.h"
 #include "url/gurl.h"
 
+namespace web {
+struct ContextMenuParams;
+}  // namespace web;
+
 @protocol CRWNativeContentDelegate;
 
 // Abstract methods needed for manipulating native content in the web content
 // area.
 @protocol CRWNativeContent<NSObject>
 
 // The page title, meant for display to the user. Will return nil if not
 // available.
 - (NSString*)title;
 
@@ skipping 71 matching lines @@
 
 @end
 
 // CRWNativeContent delegate protocol.
 @protocol CRWNativeContentDelegate<NSObject>
 
 @optional
 // Called when the content supplies a new title.
 - (void)nativeContent:(id)content titleDidChange:(NSString*)title;
 
+// Called when the content triggers a context menu.
+// The client must return whether the context menu event was handled and the
+// system menu must be suppressed.
+- (BOOL)nativeContent:(id)content
+    handleContextMenu:(const web::ContextMenuParams&)params;
+
 @end
 
 #endif  // IOS_WEB_PUBLIC_WEB_STATE_UI_CRW_NATIVE_CONTENT_H_