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

ppapi/tests/test_transport.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_TRANSPORT_H_
 #define PPAPI_TESTS_TEST_TRANSPORT_H_
 
 #include <string>
 
 #include "ppapi/c/dev/ppb_transport_dev.h"
 #include "ppapi/tests/test_case.h"
 
-struct PPB_Transport_Dev;
-
 namespace pp {
 class Transport_Dev;
 }  // namespace pp
 
 class TestTransport : public TestCase {
  public:
   explicit TestTransport(TestingInstance* instance)
       : TestCase(instance),
         transport1_(NULL),
         transport2_(NULL) {
@@ skipping 19 matching lines @@
   std::string TestConnectAndCloseUdp();
 
   // Used by the tests that access the C API directly.
   const PPB_Transport_Dev* transport_interface_;
 
   pp::Transport_Dev* transport1_;
   pp::Transport_Dev* transport2_;
 };
 
 #endif  // PPAPI_TESTS_TEST_TRANSPORT_H_