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-rw-r--r--browser/components/syncedtabs/util.js23
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diff --git a/browser/components/syncedtabs/util.js b/browser/components/syncedtabs/util.js
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
+
+this.EXPORTED_SYMBOLS = [
+ "getChromeWindow"
+];
+
+// Get the chrome (ie, browser) window hosting this content.
+function getChromeWindow(window) {
+ return window
+ .QueryInterface(Ci.nsIInterfaceRequestor)
+ .getInterface(Ci.nsIWebNavigation)
+ .QueryInterface(Ci.nsIDocShellTreeItem)
+ .rootTreeItem
+ .QueryInterface(Ci.nsIInterfaceRequestor)
+ .getInterface(Ci.nsIDOMWindow)
+ .wrappedJSObject;
+}