base::mac::IsOSSierra() -> base::mac::IsOS10_12(), etc.

ui/gfx/mac/scoped_cocoa_disable_screen_updates.h

 // Copyright (c) 2011 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.
 
 #ifndef UI_GFX_MAC_SCOPED_COCOA_DISABLE_SCREEN_UPDATES_H_
 #define UI_GFX_MAC_SCOPED_COCOA_DISABLE_SCREEN_UPDATES_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/mac_util.h"
 #include "base/macros.h"
 
 namespace gfx {
 
 // A stack-based class to disable Cocoa screen updates. When instantiated, it
 // disables screen updates and enables them when destroyed. Update disabling
 // can be nested, and there is a time-maximum (about 1 second) after which
 // Cocoa will automatically re-enable updating. This class doesn't attempt to
 // overrule that.
 class ScopedCocoaDisableScreenUpdates {
  public:
   ScopedCocoaDisableScreenUpdates() {
-    if (base::mac::IsOSElCapitanOrLater()) {
+    if (base::mac::IsAtLeastOS10_11()) {
       // Beginning with OS X 10.11, [NSAnimationContext beginGrouping] is the
       // preferred way of disabling screen updates. Use of
       // NSDisableScreenUpdates() is discouraged.
       [NSAnimationContext beginGrouping];
     } else {
       NSDisableScreenUpdates();
     }
   }
   ~ScopedCocoaDisableScreenUpdates() {
-    if (base::mac::IsOSElCapitanOrLater()) {
+    if (base::mac::IsAtLeastOS10_11()) {
       [NSAnimationContext endGrouping];
     } else {
       NSEnableScreenUpdates();
     }
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ScopedCocoaDisableScreenUpdates);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_MAC_SCOPED_COCOA_DISABLE_SCREEN_UPDATES_H_