Revert of Mandoline UI Process: Update namespaces and file names

components/mus/surfaces/surfaces_output_surface.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_MUS_SURFACES_SURFACES_OUTPUT_SURFACE_H_
 #define COMPONENTS_MUS_SURFACES_SURFACES_OUTPUT_SURFACE_H_
 
 #include "cc/output/output_surface.h"
 
-namespace mus {
+namespace surfaces {
 
 // An OutputSurface implementation that directly draws and
 // swaps to an actual GL surface.
 class DirectOutputSurface : public cc::OutputSurface {
  public:
   explicit DirectOutputSurface(
       const scoped_refptr<cc::ContextProvider>& context_provider);
   ~DirectOutputSurface() override;
 
   // cc::OutputSurface implementation
   void SwapBuffers(cc::CompositorFrame* frame) override;
 
  private:
   base::WeakPtrFactory<DirectOutputSurface> weak_ptr_factory_;
 };
 
-}  // namespace mus
+}  // namespace surfaces
 
 #endif  // COMPONENTS_MUS_SURFACES_SURFACES_OUTPUT_SURFACE_H_