Revert of Mandoline UI Process: Update namespaces and file names

components/mus/public/cpp/view_tree_delegate.h

Index: components/mus/public/cpp/view_tree_delegate.h
diff --git a/components/mus/public/cpp/view_tree_delegate.h b/components/mus/public/cpp/view_tree_delegate.h
index 2e2115e553b2da279879e931fd2c1bb25325abc2..4d58f6f1ec373328ba39b1d9deed6c218c8864f8 100644
--- a/components/mus/public/cpp/view_tree_delegate.h
+++ b/components/mus/public/cpp/view_tree_delegate.h
@@ -11,7 +11,7 @@
 #include "mojo/application/public/interfaces/service_provider.mojom.h"
 #include "mojo/services/network/public/interfaces/url_loader.mojom.h"
 
-namespace mus {
+namespace mojo {
 
 class View;
 class ViewTreeConnection;
@@ -58,6 +58,6 @@
   virtual ~ViewTreeDelegate() {}
 };
 
-}  // namespace mus
+}  // namespace mojo
 
 #endif  // COMPONENTS_MUS_PUBLIC_CPP_VIEW_TREE_DELEGATE_H_