Revert of Move throttling of background timers into the renderer scheduler

components/scheduler/child/web_scheduler_impl.cc

Index: components/scheduler/child/web_scheduler_impl.cc
diff --git a/components/scheduler/child/web_scheduler_impl.cc b/components/scheduler/child/web_scheduler_impl.cc
index cc08d38b0005f038f8d5949a0be5c852b715a43d..ce5436e2110d9b8c5b2a29d5e969dfe074995ca2 100644
--- a/components/scheduler/child/web_scheduler_impl.cc
+++ b/components/scheduler/child/web_scheduler_impl.cc
@@ -87,6 +87,20 @@
   return timer_web_task_runner_.get();
 }
 
+void WebSchedulerImpl::postTimerTaskAt(
+    const blink::WebTraceLocation& web_location,
+    blink::WebTaskRunner::Task* task,
+    double monotonicTime) {
+  DCHECK(timer_task_runner_);
+  tracked_objects::Location location(web_location.functionName(),
+                                     web_location.fileName(), -1, nullptr);
+  timer_task_runner_->PostDelayedTaskAt(
+      location,
+      base::Bind(&WebTaskRunnerImpl::runTask,
+                 base::Passed(scoped_ptr<blink::WebTaskRunner::Task>(task))),
+      base::TimeTicks() + base::TimeDelta::FromSecondsD(monotonicTime));
+}
+
 blink::WebPassOwnPtr<blink::WebViewScheduler>
 WebSchedulerImpl::createWebViewScheduler(blink::WebView*) {
   NOTREACHED();