Mandoline UI Process: Update namespaces and file names

components/mus/event_dispatcher.cc

Index: components/mus/event_dispatcher.cc
diff --git a/components/mus/event_dispatcher.cc b/components/mus/event_dispatcher.cc
index 9796267efa6ba97111040194b981b5828a1eb040..c505f2f668bdbf7c03dd39dc5b76e0a3b350ebdd 100644
--- a/components/mus/event_dispatcher.cc
+++ b/components/mus/event_dispatcher.cc
@@ -11,7 +11,7 @@
 #include "ui/gfx/geometry/point.h"
 #include "ui/gfx/geometry/point_f.h"
 
-namespace view_manager {
+namespace mus {
 
 EventDispatcher::EventDispatcher(ViewTreeHostImpl* view_tree_host)
     : view_tree_host_(view_tree_host) {}
@@ -93,4 +93,4 @@ ServerView* EventDispatcher::FindEventTarget(mojo::Event* event) {
   return focused_view;
 }
 
-}  // namespace view_manager
+}  // namespace mus