PPAPI: Move some of NexeFileDidOpen to NexeLoadManager

ppapi/generators/test_cgen_range/versions.idl

 /* Copyright (c) 2011 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.
  */
 
 /* File Comment. */
 
 label Chrome {
   M13 = 0.0,
   M14 = 1.0,
   M15 = 2.0,
   M16 = 3.0,
   M17 = 4.0
 };
 
-describe {
-  int32_t;
-};
-
 /* Bogus Interface Foo */
 [version=0.0]
 interface Foo {
   /**
    * Comment for function x
    */
   [version=0.0] int32_t Bar(int32_t x);
   /**
    * Comment for function x,y
    */
   [version=1.0] int32_t Bar(int32_t x, int32_t y);
   /**
    * Comment for function x,y,z
    */
   [version=2.0] int32_t Bar(int32_t x, int32_t y, int32_t z);
 };