Move blink scheduler implementation into a component

components/scheduler/child/task_queue_selector.h

Index: components/scheduler/child/task_queue_selector.h
diff --git a/content/child/scheduler/task_queue_selector.h b/components/scheduler/child/task_queue_selector.h
similarity index 82%
rename from content/child/scheduler/task_queue_selector.h
rename to components/scheduler/child/task_queue_selector.h
index 0a6c256b0f2d076c425301771e0c875aa19effcb..2af9e2b62ff1ae63ad1148036cfa1de625121693 100644
--- a/content/child/scheduler/task_queue_selector.h
+++ b/components/scheduler/child/task_queue_selector.h
@@ -2,13 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CONTENT_CHILD_SCHEDULER_TASK_QUEUE_SELECTOR_H_
-#define CONTENT_CHILD_SCHEDULER_TASK_QUEUE_SELECTOR_H_
+#ifndef COMPONENTS_SCHEDULER_CHILD_TASK_QUEUE_SELECTOR_H_
+#define COMPONENTS_SCHEDULER_CHILD_TASK_QUEUE_SELECTOR_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
-#include "content/common/content_export.h"
+#include "components/scheduler/scheduler_export.h"
 
 namespace base {
 class TaskQueue;
@@ -17,7 +17,7 @@ class TracedValue;
 }  // namespace trace_event
 }  // namespace base
 
-namespace content {
+namespace scheduler {
 
 class TaskQueueSelector {
  public:
@@ -28,7 +28,7 @@ class TaskQueueSelector {
   virtual void RegisterWorkQueues(
       const std::vector<const base::TaskQueue*>& work_queues) = 0;
 
-  class CONTENT_EXPORT Observer {
+  class SCHEDULER_EXPORT Observer {
    public:
     virtual ~Observer() {}
 
@@ -51,6 +51,6 @@ class TaskQueueSelector {
   virtual void AsValueInto(base::trace_event::TracedValue* state) const = 0;
 };
 
-}  // namespace content
+}  // namespace scheduler
 
-#endif  // CONTENT_CHILD_SCHEDULER_TASK_QUEUE_SELECTOR_H_
+#endif  // COMPONENTS_SCHEDULER_CHILD_TASK_QUEUE_SELECTOR_H_