Reland of Background tracing: Added config option for repeated trigger behavior (patchset #1 id:1 o…

chrome/browser/tracing/navigation_tracing.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 "chrome/browser/tracing/navigation_tracing.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 49 matching lines @@
 
   base::DictionaryValue dict;
   dict.SetString("mode", "REACTIVE_TRACING_MODE");
 
   std::unique_ptr<base::ListValue> rules_list(new base::ListValue());
   {
     std::unique_ptr<base::DictionaryValue> rules_dict(
         new base::DictionaryValue());
     rules_dict->SetString("rule", "TRACE_ON_NAVIGATION_UNTIL_TRIGGER_OR_FULL");
     rules_dict->SetString("trigger_name", kNavigationTracingConfig);
+    rules_dict->SetBoolean("stop_tracing_on_repeated_reactive", true);
     rules_dict->SetString("category", "BENCHMARK_DEEP");
     rules_list->Append(std::move(rules_dict));
   }
   {
     std::unique_ptr<base::DictionaryValue> rules_dict(
         new base::DictionaryValue());
     rules_dict->SetString("rule",
         "MONITOR_AND_DUMP_WHEN_SPECIFIC_HISTOGRAM_AND_VALUE");
     rules_dict->SetString("category", "BENCHMARK_MEMORY_HEAVY");
     rules_dict->SetString("histogram_name", "V8.GCLowMemoryNotification");
@@ skipping 39 matching lines @@
     content::BackgroundTracingManager::GetInstance()->TriggerNamedEvent(
         navigation_handle,
         content::BackgroundTracingManager::StartedFinalizingCallback());
   }
 }
 
 content::BackgroundTracingManager::TriggerHandle
     NavigationTracingObserver::navigation_handle = -1;
 
 }  // namespace tracing