Revert of Port most uses of SkOnce to SkLazyPtr.

src/core/SkLazyPtr.h

Index: src/core/SkLazyPtr.h
diff --git a/src/core/SkLazyPtr.h b/src/core/SkLazyPtr.h
index fa1a14e0335d78a8550fb76b58b271d0c742c4db..515086876c636bf99fdecacb6db15649ae0429ee 100644
--- a/src/core/SkLazyPtr.h
+++ b/src/core/SkLazyPtr.h
@@ -64,6 +64,7 @@
 
 // See FIXME below.
 class SkFontConfigInterface;
+class SkTypeface;
 
 namespace Private {
 
@@ -99,6 +100,7 @@
 #ifdef SK_DEBUG
     // FIXME: We know we leak refs on some classes.  For now, let them leak.
     void cleanup(SkFontConfigInterface*) {}
+    void cleanup(SkTypeface*) {}
     template <typename U> void cleanup(U* ptr) { Destroy(ptr); }
 
     ~SkLazyPtr() {