Initialize TaskScheduler in all child processes.

content/child/child_process.h

 // 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.
 
 #ifndef CONTENT_CHILD_CHILD_PROCESS_H_
 #define CONTENT_CHILD_CHILD_PROCESS_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 61 matching lines @@
 #if defined(OS_LINUX)
   void SetIOThreadPriority(base::ThreadPriority io_thread_priority);
 #endif
 
   // Getter for the one ChildProcess object for this process. Can only be called
   // on the main thread.
   static ChildProcess* current();
 
   static void WaitForDebugger(const std::string& label);
  private:
+  // Initializes TaskScheduler. May be overridden to initialize TaskScheduler
+  // with custom arguments.
+  virtual void InitializeTaskScheduler();
+
   int ref_count_;
 
   // An event that will be signalled when we shutdown.
   base::WaitableEvent shutdown_event_;
 
   // The thread that handles IO events.
   base::Thread io_thread_;
 
   // NOTE: make sure that main_thread_ is listed after shutdown_event_, since
   // it depends on it (indirectly through IPC::SyncChannel).  Same for
   // io_thread_.
   std::unique_ptr<ChildThreadImpl> main_thread_;
 
+  // Whether this ChildProcess initialized TaskScheduler.
+  bool initialized_task_scheduler_ = false;
+
   DISALLOW_COPY_AND_ASSIGN(ChildProcess);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_CHILD_PROCESS_H_