ART: Do some include-what-you-use

Help with transitive includes. In preparation for new
specialized headers reducing transitivity.

Bug: 118385392
Test: mmma art
Change-Id: Ib465ecceec3331ea81588fb4a43eb65e766b6904
diff --git a/runtime/mirror/array-inl.h b/runtime/mirror/array-inl.h
index 704fb11..d806e40 100644
--- a/runtime/mirror/array-inl.h
+++ b/runtime/mirror/array-inl.h
@@ -27,6 +27,7 @@
 #include "class.h"
 #include "gc/heap-inl.h"
 #include "obj_ptr-inl.h"
+#include "runtime.h"
 #include "thread-current-inl.h"
 
 namespace art {