Fix TracingControllerTest.NotWhitelistedMetadataStripped

base/trace_event/trace_log.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/trace_event/trace_log.h"
 
 #include <algorithm>
 #include <cmath>
 #include <memory>
 #include <utility>
@@ skipping 1009 matching lines @@
 
     previous_logged_events.swap(logged_events_);
     UseNextTraceBuffer();
     thread_message_loops_.clear();
 
     flush_task_runner_ = NULL;
     flush_output_callback = flush_output_callback_;
     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_;
     }
   }
 
   if (discard_events) {
     if (!flush_output_callback.is_null()) {
       scoped_refptr<RefCountedString> empty_result = new RefCountedString;
       flush_output_callback.Run(empty_result, false);
     }
@@ skipping 757 matching lines @@
 }
 
 ScopedTraceBinaryEfficient::~ScopedTraceBinaryEfficient() {
   if (*category_group_enabled_) {
     TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION(category_group_enabled_, name_,
                                                 event_handle_);
   }
 }
 
 }  // namespace trace_event_internal