Update code coverage filter

Bug: 28014424
Change-Id: Ia12bf36c76510f48a6b127ed788a15c37ac4db1b
diff --git a/Android.mk b/Android.mk
index 3a2db90..e61aa36 100644
--- a/Android.mk
+++ b/Android.mk
@@ -57,7 +57,7 @@
   LOCAL_PROGUARD_FLAG_FILES += proguard-test.flags
 endif
 
-LOCAL_EMMA_COVERAGE_FILTER := +com.android.mail.*, +com.android.emailcommon.*, +com.google.android.mail.*
+LOCAL_JACK_COVERAGE_INCLUDE_FILTER := com.android.mail.*,com.android.emailcommon.*,com.google.android.mail.*
 
 include $(BUILD_PACKAGE)