scheduler: Throttle timers in out-of-view frames

content/child/runtime_features.cc

Index: content/child/runtime_features.cc
diff --git a/content/child/runtime_features.cc b/content/child/runtime_features.cc
index a73ed1291a7b4f7d1087e1a24c5cce83732d7e22..b29d7cd925dcc1ef12286a36c3bca7c571724ce1 100644
--- a/content/child/runtime_features.cc
+++ b/content/child/runtime_features.cc
@@ -263,6 +263,9 @@ void SetRuntimeFeaturesDefaultsAndUpdateFromArgs(
   WebRuntimeFeatures::enableRenderingPipelineThrottling(
     base::FeatureList::IsEnabled(features::kRenderingPipelineThrottling));
 
+  WebRuntimeFeatures::enableTimerThrottlingForHiddenFrames(
+      base::FeatureList::IsEnabled(features::kTimerThrottlingForHiddenFrames));
+
   if (base::FeatureList::IsEnabled(
           features::kSendBeaconThrowForBlobWithNonSimpleType))
     WebRuntimeFeatures::enableSendBeaconThrowForBlobWithNonSimpleType(true);