Mac: ExternalPopupMenu::close should hide a showing popup menu.

content/browser/web_contents/web_contents_view_android.cc

Index: content/browser/web_contents/web_contents_view_android.cc
diff --git a/content/browser/web_contents/web_contents_view_android.cc b/content/browser/web_contents/web_contents_view_android.cc
index 76408a62cfe3c1ff6c6dcff8000ad10523d6bad9..2092700984deb8f353056d260443795b73723b47 100644
--- a/content/browser/web_contents/web_contents_view_android.cc
+++ b/content/browser/web_contents/web_contents_view_android.cc
@@ -189,6 +189,10 @@ void WebContentsViewAndroid::ShowPopupMenu(
   }
 }
 
+void WebContentsViewAndroid::HidePopupMenu() {
+  // TODO(tkent): implement
+}
+
 void WebContentsViewAndroid::StartDragging(
     const DropData& drop_data,
     blink::WebDragOperationsMask allowed_ops,