Switch to UniquePtr.

Only one use of scoped_ptr was incorrect (but then again, I spent an afternoon
with valgrind finding and fixing them just last week).

Change-Id: If5ec1c8aa0794a4f652bfd1c0fffccf95facdc40
diff --git a/src/base64.cc b/src/base64.cc
index a1bb61c..4966314 100644
--- a/src/base64.cc
+++ b/src/base64.cc
@@ -1,10 +1,10 @@
 // Copyright 2011 Google Inc. All Rights Reserved.
 
-#include "globals.h"
-#include "scoped_ptr.h"
-
 #include <vector>
 
+#include "UniquePtr.h"
+#include "globals.h"
+
 namespace art {
 
 static const byte kMap[256] = {
@@ -65,7 +65,7 @@
   if (y != 0) {
     return NULL;
   }
-  scoped_ptr<byte> dst(new byte[tmp.size()]);
+  UniquePtr<byte[]> dst(new byte[tmp.size()]);
   if (dst_size != NULL) {
     *dst_size = tmp.size();
   }