Move blink scheduler implementation into a component

components/scheduler/child/prioritizing_task_queue_selector.cc

Index: components/scheduler/child/prioritizing_task_queue_selector.cc
diff --git a/content/child/scheduler/prioritizing_task_queue_selector.cc b/components/scheduler/child/prioritizing_task_queue_selector.cc
similarity index 98%
rename from content/child/scheduler/prioritizing_task_queue_selector.cc
rename to components/scheduler/child/prioritizing_task_queue_selector.cc
index 193e81ff106d9a5fc23404f1beb737e9e721e2cb..5275f72b65d2eda7abe4aa77b4985082215cc07b 100644
--- a/content/child/scheduler/prioritizing_task_queue_selector.cc
+++ b/components/scheduler/child/prioritizing_task_queue_selector.cc
@@ -2,13 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "content/child/scheduler/prioritizing_task_queue_selector.h"
+#include "components/scheduler/child/prioritizing_task_queue_selector.h"
 
 #include "base/logging.h"
 #include "base/pending_task.h"
 #include "base/trace_event/trace_event_argument.h"
 
-namespace content {
+namespace scheduler {
 
 PrioritizingTaskQueueSelector::PrioritizingTaskQueueSelector()
     : starvation_count_(0), task_queue_selector_observer_(nullptr) {
@@ -189,4 +189,4 @@ void PrioritizingTaskQueueSelector::SetTaskQueueSelectorObserver(
   task_queue_selector_observer_ = observer;
 }
 
-}  // namespace content
+}  // namespace scheduler