Add missing library in command line to the linker.  Currently this library is
included implicitly via inter-library dependency.  The library is also used
by the main executable.

Change-Id: Ib5562dbc481af6d95823c97e63355037e0049f7e
diff --git a/tests/Android.mk b/tests/Android.mk
index efcceae..e1c03ec 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -33,7 +33,7 @@
         external/skia/src/core
 
 LOCAL_SHARED_LIBRARIES := \
-        libskia
+        libskia libcutils
 
 LOCAL_MODULE_TAGS := eng tests