Remove the "universal" accel. overflow scroll flags

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 6634d03267e30e1b320fbe9d4e4e9a97f891792d..bda062e7bd61e1f888b830f33ec937814d49e530 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -431,20 +431,6 @@ static bool ShouldUseCompositedScrollingForFrames(
   return DeviceScaleEnsuresTextQuality(device_scale_factor);
 }
 
-static bool ShouldUseUniversalAcceleratedCompositingForOverflowScroll() {
-  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
-
-  if (command_line.HasSwitch(
-          switches::kDisableUniversalAcceleratedOverflowScroll))
-    return false;
-
-  if (command_line.HasSwitch(
-          switches::kEnableUniversalAcceleratedOverflowScroll))
-    return true;
-
-  return false;
-}
-
 static bool ShouldUseTransitionCompositing(float device_scale_factor) {
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 
@@ -745,8 +731,6 @@ void RenderViewImpl::Initialize(RenderViewImplParams* params) {
       ShouldUseFixedPositionCompositing(device_scale_factor_));
   webview()->settings()->setAcceleratedCompositingForOverflowScrollEnabled(
       ShouldUseAcceleratedCompositingForOverflowScroll(device_scale_factor_));
-  webview()->settings()->setCompositorDrivenAcceleratedScrollingEnabled(
-      ShouldUseUniversalAcceleratedCompositingForOverflowScroll());
   webview()->settings()->setAcceleratedCompositingForTransitionEnabled(
       ShouldUseTransitionCompositing(device_scale_factor_));
   webview()->settings()->setAcceleratedCompositingForFixedRootBackgroundEnabled(