Pepper: Add SetRecordDownloadProgress() to pp::URLRequestInfo (C++ wrapper).

ppapi/cpp/url_request_info.h

Index: ppapi/cpp/url_request_info.h
diff --git a/ppapi/cpp/url_request_info.h b/ppapi/cpp/url_request_info.h
index c1cda4ebe1c33140e5d2b052c5bf05e52a9352ad..eabf91d7f7857b90ecf2d82faebdce281adb104e 100644
--- a/ppapi/cpp/url_request_info.h
+++ b/ppapi/cpp/url_request_info.h
@@ -48,6 +48,9 @@ class URLRequestInfo : public Resource {
   bool SetFollowRedirects(bool enable) {
     return SetProperty(PP_URLREQUESTPROPERTY_FOLLOWREDIRECTS, enable);
   }
+  bool SetRecordDownloadProgress(bool enable) {
+    return SetProperty(PP_URLREQUESTPROPERTY_RECORDDOWNLOADPROGRESS, enable);
+  }
   bool SetRecordUploadProgress(bool enable) {
     return SetProperty(PP_URLREQUESTPROPERTY_RECORDUPLOADPROGRESS, enable);
   }