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-rw-r--r--browser/components/migration/nsIEdgeMigrationUtils.idl23
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diff --git a/browser/components/migration/nsIEdgeMigrationUtils.idl b/browser/components/migration/nsIEdgeMigrationUtils.idl
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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/. */
+
+#include "nsISupports.idl"
+#include "nsIFile.idl"
+
+/**
+ * Utilities for migrating from legacy (non-Chromimum-based) Edge.
+ */
+[builtinclass, scriptable, uuid(9c7b7436-a17c-4c03-ba66-aeb5ae070126)]
+interface nsIEdgeMigrationUtils : nsISupports {
+ /**
+ * Determine if the Edge database is locked for writing.
+ *
+ * @param aFile The path to the Edge database.
+ *
+ * @returns A promise that is resolved to whether or not the given database
+ * could be opened for writing.
+ */
+ [implicit_jscontext]
+ Promise isDbLocked(in nsIFile aFile);
+};