Reland 97048 - Update routing id of pending resource requests for reparented iframes.

webkit/glue/resource_loader_bridge.h

Index: webkit/glue/resource_loader_bridge.h
===================================================================
--- webkit/glue/resource_loader_bridge.h	(revision 97077)
+++ webkit/glue/resource_loader_bridge.h	(working copy)
@@ -389,6 +389,10 @@
   // response parameter.
   virtual void SyncLoad(SyncLoadResponse* response) = 0;
 
+  // When loader is transferred from one page to another, the IPC routing id
+  // can change (they are associated with pages).
+  virtual void UpdateRoutingId(int new_routing_id) = 0;
+
  protected:
   // construction must go through Create()
   ResourceLoaderBridge();