Mandoline UI Process: Update namespaces and file names

components/mus/server_view_drawn_tracker.cc

Index: components/mus/server_view_drawn_tracker.cc
diff --git a/components/mus/server_view_drawn_tracker.cc b/components/mus/server_view_drawn_tracker.cc
index af08ad9420bb4fd858513d57a1cebe137f041651..85a05a878c5fbe19a589f438c4eb70372dc5c13e 100644
--- a/components/mus/server_view_drawn_tracker.cc
+++ b/components/mus/server_view_drawn_tracker.cc
@@ -7,7 +7,7 @@
 #include "components/mus/server_view.h"
 #include "components/mus/server_view_drawn_tracker_observer.h"
 
-namespace view_manager {
+namespace mus {
 
 ServerViewDrawnTracker::ServerViewDrawnTracker(
     ServerView* view,
@@ -69,4 +69,4 @@ void ServerViewDrawnTracker::OnViewVisibilityChanged(ServerView* view) {
   SetDrawn(is_drawn ? nullptr : view->parent(), is_drawn);
 }
 
-}  // namespace view_manager
+}  // namespace mus