diff -r 000000000000 -r 6474c204b198 mobile/android/tests/background/junit3/src/sync/helpers/DefaultStoreDelegate.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/tests/background/junit3/src/sync/helpers/DefaultStoreDelegate.java	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,71 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+package org.mozilla.gecko.background.sync.helpers;
+
+import java.util.concurrent.ExecutorService;
+
+import org.mozilla.gecko.sync.repositories.delegates.RepositorySessionStoreDelegate;
+
+public class DefaultStoreDelegate extends DefaultDelegate implements RepositorySessionStoreDelegate {
+
+  @Override
+  public void onRecordStoreFailed(Exception ex, String guid) {
+    performNotify("Store failed", ex);
+  }
+
+  @Override
+  public void onRecordStoreSucceeded(String guid) {
+    performNotify("DefaultStoreDelegate used", null);
+  }
+
+  @Override
+  public void onStoreCompleted(long storeEnd) {
+    performNotify("DefaultStoreDelegate used", null);
+  }
+
+  @Override
+  public RepositorySessionStoreDelegate deferredStoreDelegate(final ExecutorService executor) {
+    final RepositorySessionStoreDelegate self = this;
+    return new RepositorySessionStoreDelegate() {
+
+      @Override
+      public void onRecordStoreSucceeded(final String guid) {
+        executor.execute(new Runnable() {
+          @Override
+          public void run() {
+            self.onRecordStoreSucceeded(guid);
+          }
+        });
+      }
+
+      @Override
+      public void onRecordStoreFailed(final Exception ex, final String guid) {
+        executor.execute(new Runnable() {
+          @Override
+          public void run() {
+            self.onRecordStoreFailed(ex, guid);
+          }
+        });
+      }
+
+      @Override
+      public void onStoreCompleted(final long storeEnd) {
+        executor.execute(new Runnable() {
+          @Override
+          public void run() {
+            self.onStoreCompleted(storeEnd);
+          }
+        });
+      }
+
+      @Override
+      public RepositorySessionStoreDelegate deferredStoreDelegate(ExecutorService newExecutor) {
+        if (newExecutor == executor) {
+          return this;
+        }
+        throw new IllegalArgumentException("Can't re-defer this delegate.");
+      }
+    };
+  }
+}