Move blink scheduler implementation into a component

components/scheduler/child/null_worker_scheduler.cc

Index: components/scheduler/child/null_worker_scheduler.cc
diff --git a/content/child/scheduler/null_worker_scheduler.cc b/components/scheduler/child/null_worker_scheduler.cc
similarity index 78%
rename from content/child/scheduler/null_worker_scheduler.cc
rename to components/scheduler/child/null_worker_scheduler.cc
index 3127c3f13370af5a36d02f1ff8a0da23e350d8e0..4abfb0e8e7cedd69acc0351b077c8c34147036e8 100644
--- a/content/child/scheduler/null_worker_scheduler.cc
+++ b/components/scheduler/child/null_worker_scheduler.cc
@@ -2,16 +2,17 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "content/child/scheduler/null_worker_scheduler.h"
+#include "components/scheduler/child/null_worker_scheduler.h"
 
 #include "base/bind.h"
-#include "base/message_loop/message_loop_proxy.h"
-#include "content/child/scheduler/null_idle_task_runner.h"
+#include "base/message_loop/message_loop.h"
+#include "base/thread_task_runner_handle.h"
+#include "components/scheduler/child/null_idle_task_runner.h"
 
-namespace content {
+namespace scheduler {
 
 NullWorkerScheduler::NullWorkerScheduler()
-    : task_runner_(base::MessageLoopProxy::current()),
+    : task_runner_(base::ThreadTaskRunnerHandle::Get()),
       idle_task_runner_(new NullIdleTaskRunner()) {
 }
 
@@ -52,4 +53,4 @@ void NullWorkerScheduler::Init() {
 void NullWorkerScheduler::Shutdown() {
 }
 
-}  // namespace content
+}  // namespace scheduler