mac: s/UI_EXPORT/GL_EXPORT/ for GLSurfaceCGL

ui/gfx/gl/gl_surface_cgl.h

Index: ui/gfx/gl/gl_surface_cgl.h
diff --git a/ui/gfx/gl/gl_surface_cgl.h b/ui/gfx/gl/gl_surface_cgl.h
index 951c26663a16fd3b075dd3af636bf89143b0ac10..e6a6d06a3f45667a1229c7ae440761c74e64506a 100644
--- a/ui/gfx/gl/gl_surface_cgl.h
+++ b/ui/gfx/gl/gl_surface_cgl.h
@@ -29,7 +29,7 @@ class GLSurfaceCGL : public GLSurface {
 // associated drawable (pbuffer or fullscreen context) in order to be
 // made current. Everywhere this surface type is used, we allocate an
 // FBO at the user level as the drawable of the associated context.
-class UI_EXPORT NoOpGLSurfaceCGL : public GLSurfaceCGL {
+class GL_EXPORT NoOpGLSurfaceCGL : public GLSurfaceCGL {
  public:
   explicit NoOpGLSurfaceCGL(const gfx::Size& size);