compact_sched decoding: trace_processor diff tests

Wasn't sure how to best enforce the comparison of the two query outputs (since they do differ),
thought that maybe a comment is good enough since we probably won't be changing them much.

Change-Id: Ie37dbea44ff07d3f2d24fb5df26c552d4bf57b3f
diff --git a/test/trace_processor/sched_slices.sql b/test/trace_processor/sched_slices.sql
new file mode 100644
index 0000000..1e808d5
--- /dev/null
+++ b/test/trace_processor/sched_slices.sql
@@ -0,0 +1,3 @@
+SELECT ts, cpu, dur, ts_end, end_state, priority, tid, name
+FROM sched JOIN thread ON sched.utid == thread.utid
+ORDER BY cpu, sched.ts ASC;