Update PPAPI IDL generator to define versioned structs, and unversioned typedef.

ppapi/tests/test_char_set.h

 // 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.
 
 #ifndef PPAPI_TESTS_TEST_CHAR_SET_H_
 #define PPAPI_TESTS_TEST_CHAR_SET_H_
 
 #include <string>
 #include <vector>
 
+#include "ppapi/c/dev/ppb_char_set_dev.h"
 #include "ppapi/tests/test_case.h"
 
-struct PPB_CharSet_Dev;
-
 class TestCharSet : public TestCase {
  public:
   TestCharSet(TestingInstance* instance);
 
   // TestCase implementation.
 
   virtual bool Init();
   virtual void RunTests(const std::string& filter);
 
  private:
   std::string TestUTF16ToCharSet();
   std::string TestCharSetToUTF16();
   std::string TestGetDefaultCharSet();
 
   // Converts the given UTF-8 string to a NON-NULL TERMINATED UTF-16 string
   // stored in the given vector.
   std::vector<uint16_t> UTF8ToUTF16(const std::string& utf8);
 
-  const struct PPB_CharSet_Dev* char_set_interface_;
+  const PPB_CharSet_Dev* char_set_interface_;
 };
 
 #endif  // PPAPI_TESTS_TEST_CHAR_SET_H_