Move base64 to test code

Change-Id: I0cda5d8a559a2d60250c1d8a8ee6f69509515214
diff --git a/src/dex_file_test.cc b/src/dex_file_test.cc
index 0424cde..561c740 100644
--- a/src/dex_file_test.cc
+++ b/src/dex_file_test.cc
@@ -11,7 +11,7 @@
 namespace art {
 
 TEST(DexFileTest, Open) {
-  scoped_ptr<DexFile> dex(DexFile::OpenBase64(kNestedDex));
+  scoped_ptr<DexFile> dex(OpenDexFileBase64(kNestedDex));
   ASSERT_TRUE(dex != NULL);
 }