MD Settings: Close action menu when opening edit cookie exception dialog.

chrome/browser/resources/settings/site_settings/site_list.js

Index: chrome/browser/resources/settings/site_settings/site_list.js
diff --git a/chrome/browser/resources/settings/site_settings/site_list.js b/chrome/browser/resources/settings/site_settings/site_list.js
index ed7a2b3747cc90c0ec4fde6b4737080f29ed49c3..86bbc03ecf8d90945a71ab204f81c0191aa7eb86 100644
--- a/chrome/browser/resources/settings/site_settings/site_list.js
+++ b/chrome/browser/resources/settings/site_settings/site_list.js
@@ -449,15 +449,17 @@ Polymer({
 
   /** @private */
   onEditTap_: function() {
+    // Close action menu without resetting |this.actionMenuSite_| since it is
+    // bound to the dialog.
+    /** @type {!CrActionMenuElement} */ (
+        this.$$('dialog[is=cr-action-menu]')).close();
     this.showEditExceptionDialog_ = true;
   },
 
   /** @private */
   onEditExceptionDialogClosed_: function() {
     this.showEditExceptionDialog_ = false;
-    // Close action menu after dialog has been closed, otherwise
-    // |actionMenuSite_| is reset while the dialog is still accessing it.
-    this.closeActionMenu_();
+    this.actionMenuSite_ = null;
   },
 
   /** @private */