Initialize V8 in PDFium from external files (plugin process only)

ppapi/c/private/ppb_pdf.h

Index: ppapi/c/private/ppb_pdf.h
diff --git a/ppapi/c/private/ppb_pdf.h b/ppapi/c/private/ppb_pdf.h
index 318c21d9d5e37fac2b889cf52c398b57bc86efe7..3e708ddecc032140ee55550010954a924cbfee5e 100644
--- a/ppapi/c/private/ppb_pdf.h
+++ b/ppapi/c/private/ppb_pdf.h
@@ -172,7 +172,8 @@ struct PPB_PDF {
 
   // Gets pointers to both the mmap'd V8 snapshot files and their sizes.
   // This is needed when loading V8's initial snapshot from external files.
-  void (*GetV8ExternalSnapshotData)(const char** natives_data_out,
+  void (*GetV8ExternalSnapshotData)(PP_Instance instance,
+                                    const char** natives_data_out,
                                     int* natives_size_out,
                                     const char** snapshot_data_out,
                                     int* snapshot_size_out);