Only enable the Dart timeline for benchmarks

services/dart/content_handler_main.cc

 // Copyright 2014 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/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/strings/string_split.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/platform_thread.h"
@@ skipping 10 matching lines @@
 #include "mojo/services/tracing/interfaces/tracing.mojom.h"
 #include "mojo/services/url_response_disk_cache/interfaces/url_response_disk_cache.mojom.h"
 #include "services/dart/content_handler_app_service_connector.h"
 #include "services/dart/dart_app.h"
 #include "services/dart/dart_tracing.h"
 #include "url/gurl.h"
 
 namespace dart {
 
 const char kCompleteTimeline[] = "--complete-timeline";
+const char kDartTimeline[] = "--dart-timeline";
 const char kEnableStrictMode[] = "--enable-strict-mode";
 const char kDisableObservatory[] = "--disable-observatory";
 const char kTraceStartup[] = "--trace-startup";
 const char kRunOnMessageLoop[] = "--run-on-message-loop";
 
 static bool IsDartZip(std::string url) {
   // If the url doesn't end with ".dart" we assume it is a zipped up
   // dart application.
   return !base::EndsWith(url, ".dart", base::CompareCase::INSENSITIVE_ASCII);
 }
@@ skipping 91 matching lines @@
     if (app->HasArg(kCompleteTimeline)) {
       timeline_arg = kCompleteTimeline;
       timeline_arg_count = 1;
     }
 
     bool observatory_enabled = true;
     if (app->HasArg(kDisableObservatory)) {
       observatory_enabled = false;
     }
 
+    bool enable_dart_timeline = false;
+    if (app->HasArg(kDartTimeline)) {
+      enable_dart_timeline = true;
+    }
+
     bool success = mojo::dart::DartController::Initialize(
         service_connector_,
         default_strict_,
         observatory_enabled,
+        enable_dart_timeline,
         &timeline_arg,
         timeline_arg_count);
 
     if (app->HasArg(kTraceStartup)) {
       DartTimelineController::EnableAll();
     }
     if (!success) {
       LOG(ERROR) << "Dart VM Initialization failed";
     }
   }
@@ skipping 86 matching lines @@
                     run_on_message_loop));
   }
 }
 
 }  // namespace dart
 
 MojoResult MojoMain(MojoHandle application_request) {
   mojo::ApplicationRunnerChromium runner(new dart::DartContentHandlerApp);
   return runner.Run(application_request);
 }