Use /system/framework/framework.jar:preloaded-classes for on device dex2oat

Change-Id: I30ccbd5295a2979b9c89f00c93ad316d9b6475e9
diff --git a/src/zip_archive.h b/src/zip_archive.h
index 54835cf..ef31486 100644
--- a/src/zip_archive.h
+++ b/src/zip_archive.h
@@ -37,7 +37,8 @@
 class ZipEntry {
  public:
   bool ExtractToFile(File& file);
-  bool ExtractToMemory(MemMap& mem_map);
+  bool ExtractToMemory(uint8_t* begin, size_t size);
+  MemMap* ExtractToMemMap(const char* entry_filename);
 
   uint32_t GetUncompressedLength();
   uint32_t GetCrc32();