Remove options to disable deadline scheduling

content/browser/renderer_host/render_widget_host_view_aura.cc

Index: content/browser/renderer_host/render_widget_host_view_aura.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
index ff3ed042e3009a2b0a147a4478d37e594b6cb72f..5782e060f9b235a195b6753b331715109a9aa396 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -3225,17 +3225,8 @@ void RenderWidgetHostViewAura::OnCompositingLockStateChanged(
 void RenderWidgetHostViewAura::OnUpdateVSyncParameters(
     base::TimeTicks timebase,
     base::TimeDelta interval) {
-  if (IsShowing()) {
-    if (IsDeadlineSchedulingEnabled()) {
-      // The deadline scheduler has logic to stagger the draws of the
-      // Renderer and Browser built-in, so send it an accurate timebase.
-      host_->UpdateVSyncParameters(timebase, interval);
-    } else if (!last_draw_ended_.is_null()) {
-      // For the non-deadline scheduler, we send the Renderer an offset
-      // vsync timebase to avoid its draws racing the Browser's draws.
-      host_->UpdateVSyncParameters(last_draw_ended_, interval);
-    }
-  }
+  if (IsShowing())
+    host_->UpdateVSyncParameters(timebase, interval);
 }
 
 ////////////////////////////////////////////////////////////////////////////////