Add Active Directory password change screen.

chrome/browser/resources/chromeos/login/screen_active_directory_password_change.css

Index: chrome/browser/resources/chromeos/login/screen_active_directory_password_change.css
diff --git a/chrome/browser/resources/chromeos/login/screen_active_directory_password_change.css b/chrome/browser/resources/chromeos/login/screen_active_directory_password_change.css
new file mode 100644
index 0000000000000000000000000000000000000000..81a55ef39abed3b42e87e9b246b841579fa22227
--- /dev/null
+++ b/chrome/browser/resources/chromeos/login/screen_active_directory_password_change.css
@@ -0,0 +1,14 @@
+/* Copyright 2016 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#ad-password-change {
+  bottom: 0;
+  display: block;
+  height: 528px; /* Should be the same as #gaia-signin. */
+  left: 0;
+  position: absolute;
+  right: 0;
+  top: 0;
+  width: 448px; /* Should be the same as #gaia-signin. */
+}