Switch from core to core-libart

Bug: 14298175
Change-Id: I89db18bf3d88f9511cb2ad943c64ecdbaf09d96f
diff --git a/tools/layoutlib/Android.mk b/tools/layoutlib/Android.mk
index cb68340..258d9b3 100644
--- a/tools/layoutlib/Android.mk
+++ b/tools/layoutlib/Android.mk
@@ -28,8 +28,8 @@
 built_framework_dep := $(call java-lib-deps,framework-base)
 built_framework_classes := $(call java-lib-files,framework-base)
 
-built_core_dep := $(call java-lib-deps,core)
-built_core_classes := $(call java-lib-files,core)
+built_core_dep := $(call java-lib-deps,core-libart)
+built_core_classes := $(call java-lib-files,core-libart)
 
 built_ext_dep := $(call java-lib-deps,ext)
 built_ext_classes := $(call java-lib-files,ext)