Snap for 4428213 from 3775f617fbaf972322417651d25cebc8f615d5bb to pi-release

Change-Id: Ibd1c5f61ad6fd0bfb7cc8cb80ab8a4134820f6a1
diff --git a/files/Android.bp b/files/Android.bp
index 5440cf0..5898b68 100644
--- a/files/Android.bp
+++ b/files/Android.bp
@@ -76,6 +76,7 @@
     name: "libyuv_unittest",
     static_libs: ["libyuv"],
     shared_libs: ["libjpeg"],
+    cflags: ["-Wall", "-Werror"],
 
     srcs: [
         "unit_test/unit_test.cc",