Implement a sqlite helper to split strings

Change-Id: Icfbed161a8c089684bc7a596bf928e47a1d004bc
diff --git a/Android.bp b/Android.bp
index d68cdc0..c6468df 100644
--- a/Android.bp
+++ b/Android.bp
@@ -3117,6 +3117,7 @@
     "src/trace_processor/slice_tracker.cc",
     "src/trace_processor/span_join_operator_table.cc",
     "src/trace_processor/sql_stats_table.cc",
+    "src/trace_processor/sqlite3_str_split.cc",
     "src/trace_processor/stats_table.cc",
     "src/trace_processor/storage_columns.cc",
     "src/trace_processor/storage_schema.cc",