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

ppapi/shared_impl/ppb_var_shared.h

Index: ppapi/shared_impl/ppb_var_shared.h
diff --git a/ppapi/shared_impl/ppb_var_shared.h b/ppapi/shared_impl/ppb_var_shared.h
index 5865d46996e05b6e4fdea79b74894ba34c1796e0..2416a99e0dc1c8b9f0511af947e6ec4beb9e329b 100644
--- a/ppapi/shared_impl/ppb_var_shared.h
+++ b/ppapi/shared_impl/ppb_var_shared.h
@@ -7,18 +7,17 @@
 
 #include "ppapi/c/pp_module.h"
 #include "ppapi/c/pp_stdint.h"
+#include "ppapi/c/ppb_var.h"
+#include "ppapi/c/dev/ppb_var_array_buffer_dev.h"
 #include "ppapi/shared_impl/ppapi_shared_export.h"
 
 struct PP_Var;
-struct PPB_Var;
-struct PPB_Var_1_0;
-struct PPB_VarArrayBuffer_Dev;
 
 namespace ppapi {
 
 class PPAPI_SHARED_EXPORT PPB_Var_Shared {
  public:
-  static const PPB_Var* GetVarInterface();
+  static const PPB_Var_1_1* GetVarInterface1_1();
   static const PPB_Var_1_0* GetVarInterface1_0();
   static const PPB_VarArrayBuffer_Dev* GetVarArrayBufferInterface();
 };