Reuse context menu in StaticHTMLViewController

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

Index: ios/web/public/web_state/ui/crw_context_menu_delegate.h
diff --git a/ios/web/public/web_state/ui/crw_context_menu_delegate.h b/ios/web/public/web_state/ui/crw_context_menu_delegate.h
new file mode 100644
index 0000000000000000000000000000000000000000..e635acfbe39072018b3d948e47bfe18f36ebea53
--- /dev/null
+++ b/ios/web/public/web_state/ui/crw_context_menu_delegate.h
@@ -0,0 +1,27 @@
+// Copyright 2017 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_CONTEXT_MENU_DELEGATE_H_
+#define IOS_WEB_PUBLIC_WEB_STATE_UI_CRW_CONTEXT_MENU_DELEGATE_H_
+
+#import <WebKit/WebKit.h>
+
+#import "ios/web/public/web_state/context_menu_params.h"
+
+// Implement this protocol to listen to the custom context menu trigger from
+// WKWebView.
+@protocol CRWContextMenuDelegate
+// Called when the custom Context menu recognizer triggers on |webView|.
+// - triggered on a long press gesture, slightly shorter than the default
+//   context menu recognizer.
+// - if result is YES, the system context meny will be suppressed.
+//   YES must be returned within 0.05 second.

[Eugene But (OOO till 7-30), 2017/01/13 18:23:42]

Is it a requirement to return YES in 0.05 seconds? I thought that for
synchronous call it does not matter.

[Olivier, 2017/01/13 18:49:55]

At least if you spin the runloop, it will be a problem.

[Eugene But (OOO till 7-30), 2017/01/13 19:00:32]

Thanks! So should this comment be "YES must be returned from the same runloop"?

[Olivier, 2017/01/16 08:31:05]

Done.

+// - if result is NO, the system context meny will be displayed.

[Eugene But (OOO till 7-30), 2017/01/13 18:23:42]

s/meny/menu

[Olivier, 2017/01/13 18:49:55]

Done.

+// - Client can return YES without showing any UI to cancel the system context
+//   menu.

[Eugene But (OOO till 7-30), 2017/01/13 18:23:42]

Please also document that method is not called if gesture is performed on iframe
(crbug.com/228179)

[Olivier, 2017/01/13 18:49:55]

Done.

+- (BOOL)webView:(WKWebView*)webView
+    handleContextMenu:(const web::ContextMenuParams&)params;
+@end
+
+#endif  // IOS_WEB_PUBLIC_WEB_STATE_UI_CRW_CONTEXT_MENU_DELEGATE_H_