Fix ifndef name and filename mismatches in ui/gl/

ui/gl/gl_wgl_api_implementation.h

 // 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.
 
-#ifndef UI_GL_WGL_API_IMPLEMENTATION_H_
-#define UI_GL_WGL_API_IMPLEMENTATION_H_
+#ifndef UI_GL_GL_WGL_API_IMPLEMENTATION_H_
+#define UI_GL_GL_WGL_API_IMPLEMENTATION_H_
 
 #include "base/compiler_specific.h"
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_export.h"
 
 namespace gfx {
 
 class GLContext;
 struct GLWindowSystemBindingInfo;
 
@@ skipping 35 matching lines @@
   // it means we can easily edit the non-auto generated parts right here in
   // this file instead of having to edit some template or the code generator.
   #include "gl_bindings_api_autogen_wgl.h"
 
  private:
   WGLApi* wgl_api_;
 };
 
 }  // namespace gfx
 
-#endif  // UI_GL_WGL_API_IMPLEMENTATION_H_
+#endif  // UI_GL_GL_WGL_API_IMPLEMENTATION_H_