tp: add support for parsing systemTraceEvents from JSON traces

Bug: 150213213
Change-Id: I6cbb8d2836fddf6b6feb8663bff3edc57643823e
diff --git a/BUILD b/BUILD
index 64b7160..152609e 100644
--- a/BUILD
+++ b/BUILD
@@ -920,7 +920,6 @@
         "src/trace_processor/importers/proto/system_probes_parser.h",
         "src/trace_processor/importers/proto/vulkan_memory_tracker.cc",
         "src/trace_processor/importers/proto/vulkan_memory_tracker.h",
-        "src/trace_processor/importers/systrace/systrace_line.h",
         "src/trace_processor/importers/systrace/systrace_line_parser.cc",
         "src/trace_processor/importers/systrace/systrace_line_parser.h",
         "src/trace_processor/importers/systrace/systrace_line_tokenizer.cc",
@@ -987,6 +986,7 @@
         "src/trace_processor/importers/proto/track_event_parser.h",
         "src/trace_processor/importers/proto/track_event_tokenizer.cc",
         "src/trace_processor/importers/proto/track_event_tokenizer.h",
+        "src/trace_processor/importers/systrace/systrace_line.h",
         "src/trace_processor/metadata_tracker.cc",
         "src/trace_processor/metadata_tracker.h",
         "src/trace_processor/perf_sample_tracker.cc",