Implement Document.referrer

components/net/about_loader.rs

@@ -36,6 +36,7 @@ pub fn factory(mut load_data: LoadData,
                 headers: None,
                 status: Some(RawStatus(200, "OK".into())),
                 https_state: HttpsState::None,
+                referrer: None,
             };
             if let Ok(chan) = start_sending_sniffed_opt(start_chan,
                                                         metadata,

components/net/blob_loader.rs

@@ -51,6 +51,7 @@ pub fn load_blob(load_data: LoadData, start_chan: LoadConsumer,
         // https://w3c.github.io/FileAPI/#TwoHundredOK
         status: Some(RawStatus(200, "OK".into())),
         https_state: HttpsState::None,
+        referrer: None
     };
 
     if let Ok(chan) =

components/net/http_loader.rs

@@ -1070,6 +1070,7 @@ pub fn load<A, B>(load_data: &LoadData,
         } else {
             HttpsState::None
         };
+        metadata.referrer = referrer_url;
 
         // Only notify the devtools about the final request that received a response.
         if let Some(msg) = msg {