Initialize V8 in PDFium from external files (in-renderer process only).

ppapi/cpp/private/pdf.cc

Index: ppapi/cpp/private/pdf.cc
diff --git a/ppapi/cpp/private/pdf.cc b/ppapi/cpp/private/pdf.cc
index ac5b941fad4f920394c3d8f476ec056d532804fc..52df60c710cafbf69baa4d5f2c68b0550cb61de0 100644
--- a/ppapi/cpp/private/pdf.cc
+++ b/ppapi/cpp/private/pdf.cc
@@ -197,4 +197,20 @@ void PDF::SetLinkUnderCursor(const InstanceHandle& instance, const char* url) {
     get_interface<PPB_PDF>()->SetLinkUnderCursor(instance.pp_instance(), url);
 }
 
+// static
+void PDF::GetV8ExternalSnapshotData(const char** natives_data_out,
+                                    int* natives_size_out,
+                                    const char** snapshot_data_out,
+                                    int* snapshot_size_out) {
+  if (has_interface<PPB_PDF>()) {
+    get_interface<PPB_PDF>()->GetV8ExternalSnapshotData(natives_data_out,
+        natives_size_out, snapshot_data_out, snapshot_size_out);
+    return;
+  }
+  *natives_data_out = NULL;
+  *snapshot_data_out = NULL;
+  *natives_size_out = 0;
+  *snapshot_size_out = 0;
+}
+
 }  // namespace pp