Bug 552822 - Windows bustage due to wrong type. r=me

dom/ipc/TabParent.cpp

@@ -452,7 +452,7 @@ TabParent::DeallocPContextWrapper(PContextWrapperParent* actor)
 }
 
 PGeolocationRequestParent*
-TabParent::AllocPGeolocationRequest(const URI::URI& uri)
+TabParent::AllocPGeolocationRequest(const IPC::URI& uri)
 {
   return new GeolocationRequestParent(mFrameElement, uri);
 }