Revert "Revert "Make original dex file be more deduplicated""

This reverts commit a7c04c4fe6623985ba2d0cca942d5e1e584f4358.

Reason for revert: Issue with target buildbots was fixed

Test: m clean && ./test.py --target -j8
Bug: 31455788

Change-Id: If00ef9433a9308810a40ea4e0d809987c934cef8
diff --git a/runtime/mirror/class_ext.cc b/runtime/mirror/class_ext.cc
index 5dc3aca..94e4b88 100644
--- a/runtime/mirror/class_ext.cc
+++ b/runtime/mirror/class_ext.cc
@@ -117,9 +117,9 @@
   }
 }
 
-void ClassExt::SetOriginalDexFileBytes(ObjPtr<ByteArray> bytes) {
+void ClassExt::SetOriginalDexFile(ObjPtr<Object> bytes) {
   DCHECK(!Runtime::Current()->IsActiveTransaction());
-  SetFieldObject<false>(OFFSET_OF_OBJECT_MEMBER(ClassExt, original_dex_file_bytes_), bytes);
+  SetFieldObject<false>(OFFSET_OF_OBJECT_MEMBER(ClassExt, original_dex_file_), bytes);
 }
 
 void ClassExt::SetClass(ObjPtr<Class> dalvik_system_ClassExt) {