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

command_buffer/service/win/d3d9/geometry_d3d9.cc

Index: command_buffer/service/win/d3d9/geometry_d3d9.cc
===================================================================
--- command_buffer/service/win/d3d9/geometry_d3d9.cc	(revision 30103)
+++ command_buffer/service/win/d3d9/geometry_d3d9.cc	(working copy)
@@ -41,6 +41,7 @@
 
 namespace o3d {
 namespace command_buffer {
+namespace o3d {
 
 // Destroys the D3D9 vertex buffer.
 VertexBufferD3D9::~VertexBufferD3D9() {
@@ -432,5 +433,6 @@
   return parse_error::kParseNoError;
 }
 
+}  // namespace o3d
 }  // namespace command_buffer
 }  // namespace o3d