move all O3D specific command buffer stuff to command_buffer::o3d...

command_buffer/service/win/d3d9/render_surface_d3d9.cc

Index: command_buffer/service/win/d3d9/render_surface_d3d9.cc
===================================================================
--- command_buffer/service/win/d3d9/render_surface_d3d9.cc	(revision 30103)
+++ command_buffer/service/win/d3d9/render_surface_d3d9.cc	(working copy)
@@ -40,6 +40,7 @@
 
 namespace o3d {
 namespace command_buffer {
+namespace o3d {
 
 RenderSurfaceD3D9::RenderSurfaceD3D9(int width,
                                      int height,
@@ -225,6 +226,7 @@
   HR(d3d_device()->SetDepthStencilSurface(back_buffer_depth_surface_));
 }
 
+}  // namespace o3d
 }  // namespace command_buffer
 }  // namespace o3d