Add a factory and defines for native Linux surfaces.

ui/gl/gl_implementation.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.
 
 #include "ui/gl/gl_implementation.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/at_exit.h"
@@ skipping 58 matching lines @@
 #if defined(OS_WIN)
 
 EGLApi* g_current_egl_context;
 WGLApi* g_current_wgl_context;
 
 #elif defined(USE_X11)
 
 EGLApi* g_current_egl_context;
 GLXApi* g_current_glx_context;
 
+#elif defined(USE_NATIVE_SURFACE_LINUX)
+
+EGLApi* g_current_egl_context;
+
 #elif defined(OS_ANDROID)
 
 EGLApi* g_current_egl_context;
 
 #endif
 
 GLImplementation GetNamedGLImplementation(const std::string& name) {
   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kGLImplementationNamePairs); ++i) {
     if (name == kGLImplementationNamePairs[i].name)
       return kGLImplementationNamePairs[i].implementation;
@@ skipping 73 matching lines @@
   if (!proc && g_get_proc_address) {
     proc = g_get_proc_address(name);
     if (proc)
       return proc;
   }
 
   return proc;
 }
 
 }  // namespace gfx