Implement API for accessing fonts installed locally on the system.

content/common/font_access/font_access_service.mojom

Index: content/common/font_access/font_access_service.mojom
diff --git a/content/common/font_access/font_access_service.mojom b/content/common/font_access/font_access_service.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..9a0020a6b21798175820e42a87afb65b72eb371d
--- /dev/null
+++ b/content/common/font_access/font_access_service.mojom
@@ -0,0 +1,12 @@
+// 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;
+
+import "font_description.mojom";
+
+interface FontAccessService {
+  GetFontList() => (array<FontDescription> results);
+  GetFontData(string family, string style) => (handle<shared_buffer> shared_state, int64 size);
+};