Mandoline UI Process: Update namespaces and file names

components/mus/surfaces/surfaces_state.h

Index: components/mus/surfaces/surfaces_state.h
diff --git a/components/mus/surfaces/surfaces_state.h b/components/mus/surfaces/surfaces_state.h
index b4d4a2ed3ce73edc69abb887c9461363cdaa170d..5d319302619d0943906970b7d5c81849ebd6f296 100644
--- a/components/mus/surfaces/surfaces_state.h
+++ b/components/mus/surfaces/surfaces_state.h
@@ -14,7 +14,7 @@ namespace cc {
 class SurfaceManager;
 }  // namespace cc
 
-namespace surfaces {
+namespace mus {
 
 // The SurfacesState object is an object global to the View Manager app that
 // holds the SurfaceManager, SurfacesScheduler and allocates new Surfaces
@@ -45,6 +45,6 @@ class SurfacesState : public base::RefCounted<SurfacesState> {
   DISALLOW_COPY_AND_ASSIGN(SurfacesState);
 };
 
-}  // namespace surfaces
+}  // namespace mus
 
 #endif  //  COMPONENTS_MUS_SURFACES_SURFACES_STATE_H_