Remove options to disable deadline scheduling

ui/compositor/compositor_switches.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/compositor/compositor_switches.h"
 
 #include "base/command_line.h"
 
 namespace switches {
 
 const char kDisableTestCompositor[] = "disable-test-compositor";
 
-const char kUIDisableDeadlineScheduling[] = "ui-disable-deadline-scheduling";
-
 const char kUIDisableThreadedCompositing[] = "ui-disable-threaded-compositing";
 
-const char kUIEnableDeadlineScheduling[] = "ui-enable-deadline-scheduling";
-
 const char kUIShowPaintRects[] = "ui-show-paint-rects";
 
-bool IsUIDeadlineSchedulingEnabled() {
-  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
-
-  // Default to disabled.
-  bool enabled = false;
-
-  // Default to enabled for Aura.
-  enabled = true;
-
-  // Flags override.
-  enabled |= command_line.HasSwitch(switches::kUIEnableDeadlineScheduling);
-  enabled &= !command_line.HasSwitch(switches::kUIDisableDeadlineScheduling);
-
-  return enabled;
-}
-
 }  // namespace switches