Revert "Allow method references across oat files for multi-image."

Breaks Quick tests.

This reverts commit 6065402316da2b51eed5fc34cffbd991766bd408.

Change-Id: I8a5469ba7cea5f46b85cb489b3e0ef06ed548f03
diff --git a/compiler/image_writer.h b/compiler/image_writer.h
index a4a252e..9371d9f 100644
--- a/compiler/image_writer.h
+++ b/compiler/image_writer.h
@@ -123,7 +123,7 @@
 
   // Update the oat size for the given oat file. This will make the oat_offset for the next oat
   // file valid.
-  void UpdateOatFile(size_t index, size_t oat_loaded_size);
+  void UpdateOatFile(File* oat_file, const char* oat_filename);
 
  private:
   bool AllocMemory();