rename public SkDataRef to SkData
rename animator's internal SkData to SkDataInput



git-svn-id: http://skia.googlecode.com/svn/trunk@1697 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/animator/SkDisplayPost.h b/src/animator/SkDisplayPost.h
index 4b75b07..95c4042 100644
--- a/src/animator/SkDisplayPost.h
+++ b/src/animator/SkDisplayPost.h
@@ -24,7 +24,7 @@
 #include "SkMemberInfo.h"
 #include "SkIntArray.h"
 
-class SkData;
+class SkDataInput;
 class SkAnimateMaker;
 
 class SkPost : public SkDisplayable {
@@ -60,7 +60,7 @@
     SkBool8 fDirty;
 private:
     void findSinkID();
-    friend class SkData;
+    friend class SkDataInput;
     typedef SkDisplayable INHERITED;
 };