drm_hwcomposer: make GLCompositor delete bo with Importer

Change-Id: I4ec6111372381701c238d5333aa1c56baf301e02
diff --git a/gl_compositor.h b/gl_compositor.h
index e88ff13..528d8ac 100644
--- a/gl_compositor.h
+++ b/gl_compositor.h
@@ -35,7 +35,7 @@
   virtual int CreateTarget(sp<android::GraphicBuffer> &buffer);
   virtual void SetTarget(int target);
   virtual void ForgetTarget(int target);
-  virtual Composition *CreateComposition();
+  virtual Composition *CreateComposition(Importer *importer);
   virtual int QueueComposition(Composition *composition);
   virtual int Composite();