Fix TracingControllerTest.NotWhitelistedMetadataStripped

base/trace_event/trace_log.cc

Index: base/trace_event/trace_log.cc
diff --git a/base/trace_event/trace_log.cc b/base/trace_event/trace_log.cc
index 4b21437c66114667b725e3dcfb1b70d7ea18f84b..4f5d9b6e7f94faac7940ae968b9a0e83c47a9e34 100644
--- a/base/trace_event/trace_log.cc
+++ b/base/trace_event/trace_log.cc
@@ -1027,6 +1027,12 @@ void TraceLog::FinishFlush(int generation, bool discard_events) {
     flush_output_callback_.Reset();
 
     if (trace_options() & kInternalEnableArgumentFilter) {
+      const base::CommandLine& command_line =
+          *base::CommandLine::ForCurrentProcess();
+      std::string process_type = command_line.GetSwitchValueASCII("type");
+      LOG(WARNING) << "============================= " << process_type
+                   << " ==== " << !argument_filter_predicate_.is_null();
+
       CHECK(!argument_filter_predicate_.is_null());
       argument_filter_predicate = argument_filter_predicate_;
     }