Fix Tests with Proguard enabled

Bug: 2487277
Change-Id: I213fcf3037c4f2f5789535c7c3193fc05b9fd919
diff --git a/Android.mk b/Android.mk
index 1af02c2..d574b3f 100644
--- a/Android.mk
+++ b/Android.mk
@@ -10,6 +10,8 @@
 LOCAL_PACKAGE_NAME := Contacts
 LOCAL_CERTIFICATE := shared
 
+LOCAL_PROGUARD_FLAGS := -include $(LOCAL_PATH)/proguard.flags
+
 include $(BUILD_PACKAGE)
 
 # Use the folloing include to make our test apk.