diff -r 000000000000 -r 6474c204b198 mobile/android/base/sync/AlreadySyncingException.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/base/sync/AlreadySyncingException.java	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,22 @@
+/* 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/. */
+
+package org.mozilla.gecko.sync;
+
+import org.mozilla.gecko.sync.stage.GlobalSyncStage.Stage;
+
+import android.content.SyncResult;
+
+public class AlreadySyncingException extends SyncException {
+  Stage inState;
+  public AlreadySyncingException(Stage currentState) {
+    inState = currentState;
+  }
+
+  private static final long serialVersionUID = -5647548462539009893L;
+
+  @Override
+  public void updateStats(GlobalSession globalSession, SyncResult syncResult) {
+  }
+}