Convert FileRefImpl and URLRequestInfo to shared_impl.

ppapi/thunk/ppb_url_request_info_api.h

Index: ppapi/thunk/ppb_url_request_info_api.h
diff --git a/ppapi/thunk/ppb_url_request_info_api.h b/ppapi/thunk/ppb_url_request_info_api.h
index 3f6d0ed5ba6dc336d8071e2a388f409a072857cb..56634bc839ceb19fcb14c531695393b6b4ed1284 100644
--- a/ppapi/thunk/ppb_url_request_info_api.h
+++ b/ppapi/thunk/ppb_url_request_info_api.h
@@ -8,6 +8,9 @@
 #include "ppapi/c/ppb_url_request_info.h"
 
 namespace ppapi {
+
+struct PPB_URLRequestInfo_Data;
+
 namespace thunk {
 
 class PPB_URLRequestInfo_API {
@@ -21,6 +24,9 @@ class PPB_URLRequestInfo_API {
                                    int64_t start_offset,
                                    int64_t number_of_bytes,
                                    PP_Time expected_last_modified_time) = 0;
+
+  // Internal-only function for retrieving the current config.
+  virtual const PPB_URLRequestInfo_Data& GetData() const = 0;
 };
 
 }  // namespace thunk