Early return in {Suspend,Resume}Renderer() if not backgrounded

third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.cc

Index: third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.cc
diff --git a/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.cc b/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.cc
index e7adcd74026afec69613dbf018d5068c9f904aaf..9abf01c8d01df2660217c29e6dfc24c503fac500 100644
--- a/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.cc
+++ b/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.cc
@@ -549,9 +549,10 @@ void RendererSchedulerImpl::OnAudioStateChanged() {
 
 void RendererSchedulerImpl::SuspendRenderer() {
   helper_.CheckOnValidThread();
-  DCHECK(MainThreadOnly().renderer_backgrounded);
   if (helper_.IsShutdown())
     return;
+  if (!MainThreadOnly().renderer_backgrounded)
+    return;
   suspend_timers_when_backgrounded_closure_.Cancel();
 
   UMA_HISTOGRAM_COUNTS("PurgeAndSuspend.PendingTaskCount",
@@ -565,9 +566,10 @@ void RendererSchedulerImpl::SuspendRenderer() {
 
 void RendererSchedulerImpl::ResumeRenderer() {
   helper_.CheckOnValidThread();
-  DCHECK(MainThreadOnly().renderer_backgrounded);
   if (helper_.IsShutdown())
     return;
+  if (!MainThreadOnly().renderer_backgrounded)
+    return;
   suspend_timers_when_backgrounded_closure_.Cancel();
   MainThreadOnly().renderer_suspended = false;
   ResumeTimerQueueWhenForegroundedOrResumed();