diff -r 000000000000 -r 6474c204b198 mobile/android/base/sync/BackoffHandler.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/base/sync/BackoffHandler.java	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,34 @@
+/* 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;
+
+
+public interface BackoffHandler {
+  public long getEarliestNextRequest();
+
+  /**
+   * Provide a timestamp in millis before which we shouldn't sync again.
+   * Overrides any existing value.
+   *
+   * @param next
+   *          a timestamp in milliseconds.
+   */
+  public void setEarliestNextRequest(long next);
+
+  /**
+   * Provide a timestamp in millis before which we shouldn't sync again. Only
+   * change our persisted value if it's later than the existing time.
+   *
+   * @param next
+   *          a timestamp in milliseconds.
+   */
+  public void extendEarliestNextRequest(long next);
+
+  /**
+   * Return the number of milliseconds until we're allowed to sync again,
+   * or 0 if now is fine.
+   */
+  public long delayMilliseconds();
+}
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