Implement API for accessing fonts installed locally on the system.

third_party/WebKit/Source/core/css/LocalFontFace.idl

 /*
- * Copyright (C) 2010 Google Inc. All rights reserved.
- * Copyright (C) 2011 Apple Inc. All rights reserved.
+ * Copyright (C) 2016 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
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  * notice, this list of conditions and the following disclaimer.
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 [
-    NoInterfaceObject,
     ActiveDOMObject,
-    GarbageCollected,
-] interface DOMFileSystem {
-    readonly attribute DOMString name;
-    readonly attribute DirectoryEntry root;
+    WillBeGarbageCollected,
+    RuntimeEnabled=FontAccess,
+    APIExperimentEnabled=FontAccess
+] interface LocalFontFace : FontFace {
+    readonly attribute DOMString styleName;
+    readonly attribute DOMString fullName;
+    [CallWith=ScriptState] readonly attribute Promise binaryData;
 };