Pass referer on download requests

Bug: 6662557
Change-Id: Ib7fdc4b3f1e0f7370631d8a222565faaee550bfb
diff --git a/src/com/android/browser/WebViewController.java b/src/com/android/browser/WebViewController.java
index fef6964..e814ff9 100644
--- a/src/com/android/browser/WebViewController.java
+++ b/src/com/android/browser/WebViewController.java
@@ -73,7 +73,7 @@
             final String host, final String realm);
 
     void onDownloadStart(Tab tab, String url, String useragent, String contentDisposition,
-            String mimeType, long contentLength);
+            String mimeType, String referer, long contentLength);
 
     void showCustomView(Tab tab, View view, int requestedOrientation,
             WebChromeClient.CustomViewCallback callback);