Add missing junit-runner dependency

Bug: 25758743

(cherry picked from commit fe4e782952de675bc5df6830429d8cbaf3302361)

Change-Id: I8b59057b6b273348ba828aedb8fce0b22ad7e5ca
diff --git a/tests/Android.mk b/tests/Android.mk
index 7bd3b00..7993eed 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -5,7 +5,7 @@
 
 LOCAL_SRC_FILES := $(call all-java-files-under, java)
 
-LOCAL_STATIC_JAVA_LIBRARIES := mockito-target android-support-v4
+LOCAL_STATIC_JAVA_LIBRARIES := mockito-target android-support-v4 junit-runner
 LOCAL_JAVA_LIBRARIES := android.test.runner
 LOCAL_PACKAGE_NAME := AndroidSupportTests