Mandoline UI Process: Update namespaces and file names

components/mus/view_tree_host_connection.cc

Index: components/mus/view_tree_host_connection.cc
diff --git a/components/mus/view_tree_host_connection.cc b/components/mus/view_tree_host_connection.cc
index 98a58770903e57d3925d06f2a2aa74e542b88399..3991b03d2c8e83f35eedb4d3b633ca9c089165f5 100644
--- a/components/mus/view_tree_host_connection.cc
+++ b/components/mus/view_tree_host_connection.cc
@@ -7,7 +7,7 @@
 #include "components/mus/connection_manager.h"
 #include "components/mus/view_tree_host_impl.h"
 
-namespace view_manager {
+namespace mus {
 
 ViewTreeHostConnection::ViewTreeHostConnection(
     scoped_ptr<ViewTreeHostImpl> host_impl,
@@ -64,4 +64,4 @@ void ViewTreeHostConnectionImpl::OnDisplayInitialized() {
       mojo::ViewTree::ACCESS_POLICY_EMBED_ROOT, client_.Pass()));
 }
 
-}  // namespace view_manager
+}  // namespace mus