ART: Clean up includes.

Reduce dependencies to improve incremental build times.
Break up circular dependency involving class_linker-inl.h.

Change-Id: I4be742c5c2b5cd9855beea86630fd68aab76b0db
diff --git a/compiler/image_writer.cc b/compiler/image_writer.cc
index 6f8884a..2420254 100644
--- a/compiler/image_writer.cc
+++ b/compiler/image_writer.cc
@@ -25,7 +25,7 @@
 #include "art_field-inl.h"
 #include "base/logging.h"
 #include "base/unix_file/fd_file.h"
-#include "class_linker.h"
+#include "class_linker-inl.h"
 #include "compiled_method.h"
 #include "dex_file-inl.h"
 #include "driver/compiler_driver.h"