Pepper: Add a property to URLRequestInfo to skip header validation.

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 3c7c47d130ea3e78549cb7121006ad40993de511..58dd8a6f01239d75064b3c4dddca717284dca01b 100644
--- a/ppapi/cpp/url_request_info.h
+++ b/ppapi/cpp/url_request_info.h
@@ -51,6 +51,9 @@ class URLRequestInfo : public Resource {
   bool SetRecordUploadProgress(bool enable) {
     return SetProperty(PP_URLREQUESTPROPERTY_RECORDUPLOADPROGRESS, enable);
   }
+  bool SetUniversalAccess(bool enable) {
+    return SetProperty(PP_URLREQUESTPROPERTY_UNIVERSALACCESS, enable);
+  }
 };
 
 }  // namespace pp