Include OpenSans font in the web-app.

remoting/webapp/open_sans.css

Index: remoting/webapp/open_sans.css
diff --git a/remoting/webapp/open_sans.css b/remoting/webapp/open_sans.css
new file mode 100644
index 0000000000000000000000000000000000000000..a5d71f29ee94ef082fdba1daed1e256a21acca7a
--- /dev/null
+++ b/remoting/webapp/open_sans.css
@@ -0,0 +1,12 @@
+/* Copyright 2013 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.
+ */
+
+@font-face {
+  font-family: 'Open Sans';
+  font-style: normal;
+  font-weight: 400;
+  src: local('Open Sans'), local('OpenSans'),
+       url('open_sans.woff') format('woff');
+}