Revert "[scheduler] Throttle background frames with 1% CPU limit"

third_party/WebKit/Source/web/WebRuntimeFeatures.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 298 matching lines @@
 }
 
 void WebRuntimeFeatures::enableWebFontsInterventionTrigger(bool enable) {
   RuntimeEnabledFeatures::setWebFontsInterventionTriggerEnabled(enable);
 }
 
 void WebRuntimeFeatures::enableRenderingPipelineThrottling(bool enable) {
   RuntimeEnabledFeatures::setRenderingPipelineThrottlingEnabled(enable);
 }
 
-void WebRuntimeFeatures::enableExpensiveBackgroundTimerThrottling(bool enable) {
-  RuntimeEnabledFeatures::setExpensiveBackgroundTimerThrottlingEnabled(enable);
-}
-
 void WebRuntimeFeatures::enableRootLayerScrolling(bool enable) {
   RuntimeEnabledFeatures::setRootLayerScrollingEnabled(enable);
 }
 
 void WebRuntimeFeatures::enableScrollAnchoring(bool enable) {
   RuntimeEnabledFeatures::setScrollAnchoringEnabled(enable);
 }
 
 void WebRuntimeFeatures::enableAutoplayMutedVideos(bool enable) {
   RuntimeEnabledFeatures::setAutoplayMutedVideosEnabled(enable);
 }
 
 void WebRuntimeFeatures::enableTimerThrottlingForBackgroundTabs(bool enable) {
   RuntimeEnabledFeatures::setTimerThrottlingForBackgroundTabsEnabled(enable);
 }
 
 void WebRuntimeFeatures::enableTimerThrottlingForHiddenFrames(bool enable) {
   RuntimeEnabledFeatures::setTimerThrottlingForHiddenFramesEnabled(enable);
 }
 
 void WebRuntimeFeatures::enableSendBeaconThrowForBlobWithNonSimpleType(
     bool enable) {
   RuntimeEnabledFeatures::setSendBeaconThrowForBlobWithNonSimpleTypeEnabled(
       enable);
 }
 
 }  // namespace blink