Add the "virtual" keyword on method overrides that are missing it.

webkit/glue/plugins/plugin_stream_url.cc

Index: webkit/glue/plugins/plugin_stream_url.cc
diff --git a/webkit/glue/plugins/plugin_stream_url.cc b/webkit/glue/plugins/plugin_stream_url.cc
index 1af4485de4c20da71c1468a24587ac541a84d2b7..a16845bc55b093b43e593cfb8034a952999a5d82 100644
--- a/webkit/glue/plugins/plugin_stream_url.cc
+++ b/webkit/glue/plugins/plugin_stream_url.cc
@@ -106,6 +106,14 @@ void PluginStreamUrl::DidFail() {
   Close(NPRES_NETWORK_ERR);
 }
 
+bool PluginStreamUrl::IsMultiByteResponseExpected() {
+  return seekable();
+}
+
+int PluginStreamUrl::ResourceId() {
+  return id_;
+}
+
 void PluginStreamUrl::CancelRequest() {
   if (id_ > 0) {
     if (instance()->webplugin()) {