Revert of Mandoline UI Process: Update namespaces and file names

components/mus/surfaces/surfaces_output_surface.cc

 // 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.
 
 #include "components/mus/surfaces/surfaces_output_surface.h"
 
 #include "base/bind.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/context_provider.h"
 #include "cc/output/output_surface_client.h"
 #include "gpu/command_buffer/client/context_support.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 
-namespace mus {
+namespace surfaces {
 
 DirectOutputSurface::DirectOutputSurface(
     const scoped_refptr<cc::ContextProvider>& context_provider)
     : cc::OutputSurface(context_provider), weak_ptr_factory_(this) {}
 
 DirectOutputSurface::~DirectOutputSurface() {}
 
 void DirectOutputSurface::SwapBuffers(cc::CompositorFrame* frame) {
   DCHECK(context_provider_.get());
   DCHECK(frame->gl_frame_data);
   if (frame->gl_frame_data->sub_buffer_rect ==
       gfx::Rect(frame->gl_frame_data->size)) {
     context_provider_->ContextSupport()->Swap();
   } else {
     context_provider_->ContextSupport()->PartialSwapBuffers(
         frame->gl_frame_data->sub_buffer_rect);
   }
   uint32_t sync_point =
       context_provider_->ContextGL()->InsertSyncPointCHROMIUM();
   context_provider_->ContextSupport()->SignalSyncPoint(
       sync_point, base::Bind(&OutputSurface::OnSwapBuffersComplete,
                              weak_ptr_factory_.GetWeakPtr()));
   client_->DidSwapBuffers();
 }
 
-}  // namespace mus
+}  // namespace surfaces