Implement API for accessing fonts installed locally on the system.

content/common/font_access/font_description.mojom

Index: content/common/font_access/font_description.mojom
diff --git a/content/common/font_access/font_description.mojom b/content/common/font_access/font_description.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..b03d5f27d7f92ab41c497da2d3ac1ceb8f726154
--- /dev/null
+++ b/content/common/font_access/font_description.mojom
@@ -0,0 +1,11 @@
+// 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.
+
+module content;
+
+struct FontDescription {
+  string family;
+  string style;
+  string fullName;
+};