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

ppapi/c/ppb_url_response_info.h

Index: ppapi/c/ppb_url_response_info.h
diff --git a/ppapi/c/ppb_url_response_info.h b/ppapi/c/ppb_url_response_info.h
index 399a13c6193e7ddbea0ed0a18f101a7fc71775ab..a1c3b5ad0fcb997bcd47301a1825497329799e6e 100644
--- a/ppapi/c/ppb_url_response_info.h
+++ b/ppapi/c/ppb_url_response_info.h
@@ -3,7 +3,7 @@
  * found in the LICENSE file.
  */
 
-/* From ppb_url_response_info.idl modified Fri Nov 11 19:54:33 2011. */
+/* From ppb_url_response_info.idl modified Mon Nov 14 10:36:01 2011. */
 
 #ifndef PPAPI_C_PPB_URL_RESPONSE_INFO_H_
 #define PPAPI_C_PPB_URL_RESPONSE_INFO_H_
@@ -96,7 +96,7 @@ PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_URLResponseProperty, 4);
  * examining URL responses. Refer to <code>PPB_URLLoader</code> for further
  * information.
  */
-struct PPB_URLResponseInfo {
+struct PPB_URLResponseInfo_1_0 {
   /**
    * IsURLResponseInfo() determines if a response is a
    * <code>URLResponseInfo</code>.
@@ -139,6 +139,8 @@ struct PPB_URLResponseInfo {
    */
   PP_Resource (*GetBodyAsFileRef)(PP_Resource response);
 };
+
+typedef struct PPB_URLResponseInfo_1_0 PPB_URLResponseInfo;
 /**
  * @}
  */