Pepper: Autogenerate thunk for PPB_TrueTypeFont.

ppapi/api/ppb_gamepad.idl

 /* Copyright (c) 2012 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.
  */
 
 /**
  * This file defines the <code>PPB_Gamepad</code> interface, which
  * provides access to gamepad devices.
  */
 
@@ skipping 67 matching lines @@
     /**
      * Data for an individual gamepad device connected to the system.
      */
     PP_GamepadSampleData[4] items;
 };
 
 /**
  * The <code>PPB_Gamepad</code> interface allows retrieving data from
  * gamepad/joystick devices that are connected to the system.
  */
-[version=1.0, macro="PPB_GAMEPAD_INTERFACE", singleton_resource]
+[version=1.0, macro="PPB_GAMEPAD_INTERFACE"]
 interface PPB_Gamepad {
   /**
    * Samples the current state of the connected gamepads.
    */
+  [singleton]

[yzshen1, 2013/04/10 17:00:48]

I understand that sometimes per-function annotation is necessary. However, I
think for most of interfaces, their methods are either all singleton or all
non-singleton. In that case, it would be more concise to do an interface-level
annotation. Does that make sense? 

   void Sample(
       [in] PP_Instance instance,
       [out] PP_GamepadsSampleData data);
 };