Remove some usage of the ENABLE_GPU macro.

content/common/gpu/image_transport_surface_win.cc

 // Copyright (c) 2012 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.
 
-#if defined(ENABLE_GPU)
-
 #include "content/common/gpu/image_transport_surface.h"
 
 // Out of order because it has conflicts with other includes on Windows.
 #include "third_party/angle/include/EGL/egl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 265 matching lines @@
     }
   }
 
   if (surface->Initialize())
     return surface;
   else
     return NULL;
 }
 
 }  // namespace content
-
-#endif  // ENABLE_GPU