diff -r 000000000000 -r 6474c204b198 mobile/android/base/sync/net/AuthHeaderProvider.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/base/sync/net/AuthHeaderProvider.java	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,30 @@
+/* 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.net;
+
+import java.security.GeneralSecurityException;
+
+import ch.boye.httpclientandroidlib.Header;
+import ch.boye.httpclientandroidlib.client.methods.HttpRequestBase;
+import ch.boye.httpclientandroidlib.impl.client.DefaultHttpClient;
+import ch.boye.httpclientandroidlib.protocol.BasicHttpContext;
+
+/**
+ * An <code>AuthHeaderProvider</code> generates HTTP Authorization headers for
+ * HTTP requests.
+ */
+public interface AuthHeaderProvider {
+  /**
+   * Generate an HTTP Authorization header.
+   *
+   * @param request HTTP request.
+   * @param context HTTP context.
+   * @param client HTTP client.
+   * @return HTTP Authorization header.
+   * @throws GeneralSecurityException usually wrapping a more specific exception.
+   */
+  Header getAuthHeader(HttpRequestBase request, BasicHttpContext context, DefaultHttpClient client)
+    throws GeneralSecurityException;
+}