Fix for surfaceless implementation

ui/gl/gl_surface.h

Index: ui/gl/gl_surface.h
diff --git a/ui/gl/gl_surface.h b/ui/gl/gl_surface.h
index ed029add26c6992111dcb446ba6cfe2523deb3da..3851c1c7c81b935154533af5f39a53c1f1791bf6 100644
--- a/ui/gl/gl_surface.h
+++ b/ui/gl/gl_surface.h
@@ -122,6 +122,8 @@ class GL_EXPORT GLSurface : public base::RefCounted<GLSurface> {
                                     const Rect& bounds_rect,
                                     const RectF& crop_rect);
 
+  virtual bool IsSurfaceless() const;
+
   // Create a GL surface that renders directly to a view.
   static scoped_refptr<GLSurface> CreateViewGLSurface(
       gfx::AcceleratedWidget window);
@@ -181,6 +183,7 @@ class GL_EXPORT GLSurfaceAdapter : public GLSurface {
                                     GLImage* image,
                                     const Rect& bounds_rect,
                                     const RectF& crop_rect) OVERRIDE;
+  virtual bool IsSurfaceless() const OVERRIDE;
 
   GLSurface* surface() const { return surface_.get(); }