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

ppapi/tests/test_char_set.h

Index: ppapi/tests/test_char_set.h
diff --git a/ppapi/tests/test_char_set.h b/ppapi/tests/test_char_set.h
index 3183e187c92f6856712fef1bb9a6aa76c76661d1..cd43f69a27ee01289b5e302de4af2a6af66c3ee3 100644
--- a/ppapi/tests/test_char_set.h
+++ b/ppapi/tests/test_char_set.h
@@ -8,10 +8,9 @@
 #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);
@@ -30,7 +29,7 @@ class TestCharSet : public TestCase {
   // 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_