fixes for some warnings:
- #if of something that was not defined
- explicit constructor call for baseclass in copy-constructor of subclass

http://code.google.com/p/skia/issues/detail?id=112



git-svn-id: http://skia.googlecode.com/svn/trunk@727 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/utils/SkLayer.h b/include/utils/SkLayer.h
index c42261f..80a2137 100644
--- a/include/utils/SkLayer.h
+++ b/include/utils/SkLayer.h
@@ -128,6 +128,8 @@
     uint32_t    fFlags;
 
     SkTDArray<SkLayer*> m_children;
+
+    typedef SkRefCnt INHERITED;
 };
 
 #endif