remove SkBounder -- unused and unloved

src/animator/SkDisplayList.h

Index: src/animator/SkDisplayList.h
diff --git a/src/animator/SkDisplayList.h b/src/animator/SkDisplayList.h
index b8705982e4ccdd74858b1b18a8307d1eecc52441..a856413def34f416c63ffa57e35733ef814ed5a4 100644
--- a/src/animator/SkDisplayList.h
+++ b/src/animator/SkDisplayList.h
@@ -1,4 +1,3 @@
-
 /*
  * Copyright 2006 The Android Open Source Project
  *
@@ -6,14 +5,13 @@
  * found in the LICENSE file.
  */
 
-
 #ifndef SkDisplayList_DEFINED
 #define SkDisplayList_DEFINED
 
 #include "SkOperand.h"
 #include "SkIntArray.h"
-#include "SkBounder.h"
 #include "SkRect.h"
+#include "SkRefCnt.h"
 
 class SkAnimateMaker;
 class SkActive;
@@ -21,7 +19,7 @@ class SkApply;
 class SkDrawable;
 class SkGroup;
 
-class SkDisplayList : public SkBounder {
+class SkDisplayList : public SkRefCnt {
 public:
     SkDisplayList();
     virtual ~SkDisplayList();