Revert of Port uses of SkLazyPtr to SkOncePtr.

include/private/SkOncePtr.h

Index: include/private/SkOncePtr.h
diff --git a/include/private/SkOncePtr.h b/include/private/SkOncePtr.h
index 40bea1a4c3b9cf462d69077748134d93d15ab3a3..9af204bcb29381d97f8444165d10267ce79a460b 100644
--- a/include/private/SkOncePtr.h
+++ b/include/private/SkOncePtr.h
@@ -9,23 +9,22 @@
 #define SkOncePtr_DEFINED
 
 #include "SkAtomics.h"
-#include "SkUniquePtr.h"
 
-template <typename T> class SkBaseOncePtr;
+template <typename T> class SkStaticOnce;
 
 // Use this to create a global static pointer that's intialized exactly once when you call get().
-#define SK_DECLARE_STATIC_ONCE_PTR(type, name) namespace {} static SkBaseOncePtr<type> name
+#define SK_DECLARE_STATIC_ONCE_PTR(type, name) namespace {} static SkStaticOnce<type> name
 
 // Use this for a local or member pointer that's initialized exactly once when you call get().
-template <typename T, typename Delete = skstd::default_delete<T>>
+template <typename T>
 class SkOncePtr : SkNoncopyable {
 public:
     SkOncePtr() { sk_bzero(this, sizeof(*this)); }
-    ~SkOncePtr() {
-        if (T* ptr = (T*)*this) {
-            Delete()(ptr);
-        }
-    }
+
+    // SkOncePtr does not have a destructor and does not clean up the pointer.  But you may, e.g.
+    //   delete (T*)fOncePtr;
+    //   SkSafeUnref((T*)fOncePtr);
+    // etc.
 
     template <typename F>
     T* get(const F& f) const {
@@ -37,11 +36,11 @@
     }
 
 private:
-    SkBaseOncePtr<T> fOnce;
+    SkStaticOnce<T> fOnce;
 };
 
 /* TODO(mtklein): in next CL
-typedef SkBaseOncePtr<void> SkOnceFlag;
+typedef SkStaticOnce<void> SkOnceFlag;
 #define SK_DECLARE_STATIC_ONCE(name) namespace {} static SkOnceFlag name
 
 template <typename F>
@@ -53,7 +52,7 @@
 // Implementation details below here!  No peeking!
 
 template <typename T>
-class SkBaseOncePtr {
+class SkStaticOnce {
 public:
     template <typename F>
     T* get(const F& f) const {