[reference - do not submit] Always create four pools in TaskSchedulerImpl.

chrome/renderer/chrome_content_renderer_client.cc

 // Copyright (c) 2012 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/renderer/chrome_content_renderer_client.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 1494 matching lines @@
   url::Replacements<char> r;
   r.SetPath(path.c_str(), url::Component(0, path.length()));
 
   if (result == internal::NUM_PLUGIN_ERROR)
     result = invalid_url ? internal::SUCCESS_PARAMS_REWRITE : internal::SUCCESS;
 
   RecordYouTubeRewriteUMA(result);
   return corrected_url.ReplaceComponents(r);
 }
 
-void ChromeContentRendererClient::GetTaskSchedulerInitializationParams(
-    std::vector<base::SchedulerWorkerPoolParams>* params_vector,
-    base::TaskScheduler::WorkerPoolIndexForTraitsCallback*
-        index_to_traits_callback) {
-  DCHECK(params_vector);
-  DCHECK(index_to_traits_callback);
-  // If this call fails, content will fall back to the default params.
-  *params_vector = task_scheduler_util::GetRendererWorkerPoolParams();
-  *index_to_traits_callback =
-      base::Bind(&task_scheduler_util::RendererWorkerPoolIndexForTraits);
+std::unique_ptr<base::TaskSchedulerInitParams>
+ChromeContentRendererClient::GetTaskSchedulerInitParams() {
+  return task_scheduler_util::
+      GetRendererTaskSchedulerInitParamsFromCommandLine();
 }