Fix for GL unit_tests....

command_buffer/service/cross/gl/gapi_gl.cc

 /*
  * Copyright 2009, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 101 matching lines @@
   // and context here.
   HINSTANCE module_handle;
   if (!::GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT |
                            GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS,
                            reinterpret_cast<wchar_t*>(IntermediateWindowProc),
                            &module_handle)) {
     return false;
   }
 
   WNDCLASS intermediate_class;
-  intermediate_class.style = CS_HREDRAW | CS_VREDRAW;
+  intermediate_class.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
   intermediate_class.lpfnWndProc = IntermediateWindowProc;
   intermediate_class.cbClsExtra = 0;
   intermediate_class.cbWndExtra = 0;
   intermediate_class.hInstance = module_handle;
   intermediate_class.hIcon = LoadIcon(NULL, IDI_APPLICATION);
   intermediate_class.hCursor = LoadCursor(NULL, IDC_ARROW);
   intermediate_class.hbrBackground = NULL;
   intermediate_class.lpszMenuName = NULL;
   intermediate_class.lpszClassName = L"Intermediate GL Window";
 
@@ skipping 277 matching lines @@
   glClearStencil(stencil);
   glClear((buffers & kColor ? GL_COLOR_BUFFER_BIT : 0) |
           (buffers & kDepth ? GL_DEPTH_BUFFER_BIT : 0) |
           (buffers & kStencil ? GL_STENCIL_BUFFER_BIT : 0));
   CHECK_GL_ERROR();
 }
 
 }  // namespace o3d
 }  // namespace command_buffer
 }  // namespace o3d