diff -r 000000000000 -r 6474c204b198 mobile/android/base/fxa/sync/SchedulePolicy.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/base/fxa/sync/SchedulePolicy.java	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,43 @@
+/* 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.fxa.sync;
+
+import org.mozilla.gecko.fxa.login.State.Action;
+import org.mozilla.gecko.sync.BackoffHandler;
+
+public interface SchedulePolicy {
+  /**
+   * Call this with the number of other clients syncing to the account.
+   */
+  public abstract void onSuccessfulSync(int otherClientsCount);
+  public abstract void onHandleFinal(Action needed);
+  public abstract void onUpgradeRequired();
+  public abstract void onUnauthorized();
+
+  /**
+   * Before a sync we typically wish to adjust our backoff policy. This cleans
+   * the slate prior to encountering a new backoff, and also functions as a rate
+   * limiter.
+   *
+   * The {@link SchedulePolicy} acts as a controller for the {@link BackoffHandler}.
+   * As a result of calling these two methods, the {@link BackoffHandler} will be
+   * mutated, and additional side-effects (such as scheduling periodic syncs) can
+   * occur.
+   *
+   * @param rateHandler the backoff handler to configure for basic rate limiting.
+   * @param backgroundHandler the backoff handler to configure for background operations.
+   */
+  public abstract void configureBackoffMillisBeforeSyncing(BackoffHandler rateHandler, BackoffHandler backgroundHandler);
+
+  /**
+   * We received an explicit backoff instruction, typically from a server.
+   *
+   * @param onlyExtend
+   *          if <code>true</code>, the backoff handler will be asked to update
+   *          its backoff only if the provided value is greater than the current
+   *          backoff.
+   */
+  public abstract void configureBackoffMillisOnBackoff(BackoffHandler backoffHandler, long backoffMillis, boolean onlyExtend);
+}
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