Reuse context menu in StaticHTMLViewController

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

Index: ios/web/public/web_state/ui/crw_native_content.h
diff --git a/ios/web/public/web_state/ui/crw_native_content.h b/ios/web/public/web_state/ui/crw_native_content.h
index b3f336fe157247ba0cd608d717c5d4ab072f9d40..1bb1e3909c48408da4e2497bc3307f3092adcf45 100644
--- a/ios/web/public/web_state/ui/crw_native_content.h
+++ b/ios/web/public/web_state/ui/crw_native_content.h
@@ -10,6 +10,10 @@
 #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
@@ -101,6 +105,12 @@
 // 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_