Add TaskScheduler::InitParams and accept it in TaskSchedulerImpl constructor.

base/task_scheduler/task_scheduler_impl.h

 // Copyright 2016 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.
 
 #ifndef BASE_TASK_SCHEDULER_TASK_SCHEDULER_IMPL_H_
 #define BASE_TASK_SCHEDULER_TASK_SCHEDULER_IMPL_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 17 matching lines @@
 namespace internal {
 
 class DelayedTaskManager;
 class SchedulerSingleThreadTaskRunnerManager;
 class TaskTracker;
 
 // Default TaskScheduler implementation. This class is thread-safe.
 class BASE_EXPORT TaskSchedulerImpl : public TaskScheduler {
  public:
   // Creates and returns an initialized TaskSchedulerImpl. CHECKs on failure.
+  // |name| is used to label threads and histograms. It should identify the
+  // component that creates the TaskScheduler. |init_params| contains params to
+  // initialize worker pools.
+  //
+  // Note: The names and priority hints in |init_params| are ignored (ref. TODO

[robliao, 2017/03/23 18:00:52]

Reference the bug instead?

[fdoray, 2017/03/24 14:00:39]

Done.

+  // to remove them).
+  static std::unique_ptr<TaskSchedulerImpl> Create(
+      const std::string& name,
+      const TaskScheduler::InitParams& init_params);
+
+  // Creates and returns an initialized TaskSchedulerImpl. CHECKs on failure.
   // |worker_pool_params_vector| describes the worker pools to create.
   // |worker_pool_index_for_traits_callback| returns the index in |worker_pools|
   // of the worker pool in which a task with given traits should run.
+  //
+  // Deprecated. https://crbug.com/690706
   static std::unique_ptr<TaskSchedulerImpl> Create(
       const std::vector<SchedulerWorkerPoolParams>& worker_pool_params_vector,
       const WorkerPoolIndexForTraitsCallback&
           worker_pool_index_for_traits_callback);
 
   ~TaskSchedulerImpl() override;
 
   // TaskScheduler:
   void PostDelayedTaskWithTraits(const tracked_objects::Location& from_here,
                                  const TaskTraits& traits,
@@ skipping 40 matching lines @@
   AtomicFlag join_for_testing_returned_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(TaskSchedulerImpl);
 };
 
 }  // namespace internal
 }  // namespace base
 
 #endif  // BASE_TASK_SCHEDULER_TASK_SCHEDULER_IMPL_H_