Revert "Make original dex file be more deduplicated"

Bug: 31455788

This reverts commit 9556cb2bfc6788656d53a9ddb2159ca2040f6e38.

Change-Id: If22f2bd9d1b788c2a784dbe0e7f0c2304d8e4a59
diff --git a/runtime/mirror/class_ext.cc b/runtime/mirror/class_ext.cc
index 94e4b88..5dc3aca 100644
--- a/runtime/mirror/class_ext.cc
+++ b/runtime/mirror/class_ext.cc
@@ -117,9 +117,9 @@
   }
 }
 
-void ClassExt::SetOriginalDexFile(ObjPtr<Object> bytes) {
+void ClassExt::SetOriginalDexFileBytes(ObjPtr<ByteArray> bytes) {
   DCHECK(!Runtime::Current()->IsActiveTransaction());
-  SetFieldObject<false>(OFFSET_OF_OBJECT_MEMBER(ClassExt, original_dex_file_), bytes);
+  SetFieldObject<false>(OFFSET_OF_OBJECT_MEMBER(ClassExt, original_dex_file_bytes_), bytes);
 }
 
 void ClassExt::SetClass(ObjPtr<Class> dalvik_system_ClassExt) {