Add DexCache table of <Method*, Method::GetCode()>

Change-Id: I69d46e61ff40456ff76888ad90b00e2036250d40
diff --git a/src/class_linker.h b/src/class_linker.h
index 88e1a67..eb40d28 100644
--- a/src/class_linker.h
+++ b/src/class_linker.h
@@ -135,6 +135,7 @@
   ObjectArray<T>* AllocObjectArray(size_t length) {
     return ObjectArray<T>::Alloc(GetClassRoot(kObjectArrayClass), length);
   }
+  CodeAndMethods* AllocCodeAndMethods(size_t length);
 
   Class* CreatePrimitiveClass(const char* descriptor);