diff -r 000000000000 -r 6474c204b198 mobile/android/base/sync/repositories/RepositorySessionBundle.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/base/sync/repositories/RepositorySessionBundle.java	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,55 @@
+/* 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.repositories;
+
+import java.io.IOException;
+
+import org.json.simple.parser.ParseException;
+import org.mozilla.gecko.background.common.log.Logger;
+import org.mozilla.gecko.sync.ExtendedJSONObject;
+import org.mozilla.gecko.sync.NonObjectJSONException;
+
+public class RepositorySessionBundle {
+  public static final String LOG_TAG = RepositorySessionBundle.class.getSimpleName();
+
+  protected static final String JSON_KEY_TIMESTAMP = "timestamp";
+
+  protected final ExtendedJSONObject object;
+
+  public RepositorySessionBundle(String jsonString) throws IOException, ParseException, NonObjectJSONException {
+    object = ExtendedJSONObject.parseJSONObject(jsonString);
+  }
+
+  public RepositorySessionBundle(long lastSyncTimestamp) {
+    object = new ExtendedJSONObject();
+    this.setTimestamp(lastSyncTimestamp);
+  }
+
+  public long getTimestamp() {
+    if (object.containsKey(JSON_KEY_TIMESTAMP)) {
+      return object.getLong(JSON_KEY_TIMESTAMP);
+    }
+
+    return -1;
+  }
+
+  public void setTimestamp(long timestamp) {
+    Logger.debug(LOG_TAG, "Setting timestamp to " + timestamp + ".");
+    object.put(JSON_KEY_TIMESTAMP, Long.valueOf(timestamp));
+  }
+
+  public void bumpTimestamp(long timestamp) {
+    long existing = this.getTimestamp();
+    if (timestamp > existing) {
+      this.setTimestamp(timestamp);
+    } else {
+      Logger.debug(LOG_TAG, "Timestamp " + timestamp + " not greater than " + existing + "; not bumping.");
+    }
+  }
+
+  public String toJSONString() {
+    return object.toJSONString();
+  }
+}