Initialize V8 in PDFium from external files (in-renderer 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 fdd62fe3ffe7fb4b5aab548391a9dff3c79632b7..006042eed8b70937573e55c892e267eb36e5e1dc 100644
--- a/ppapi/c/private/ppb_pdf.h
+++ b/ppapi/c/private/ppb_pdf.h
@@ -169,6 +169,13 @@ struct PPB_PDF {
 
   // Sets the link currently under the cursor.
   void (*SetLinkUnderCursor)(PP_Instance instance, const char* url);
+
+#if !defined(OS_ANDROID) && defined(V8_USE_EXTERNAL_STARTUP_DATA)
+  const char* (*GetV8NativesData)(PP_Instance instance);
+  const char* (*GetV8SnapshotData)(PP_Instance instance);
+  int (*GetV8NativesSize)(PP_Instance instance);
+  int (*GetV8SnapshotSize)(PP_Instance instance);
+#endif  // !defined(OS_ANDROID) && defined(V8_USE_EXTERNAL_STARTUP_DATA)
 };
 
 #endif  // PPAPI_C_PRIVATE_PPB_PDF_H_