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

ui/base/cocoa/appkit_utils.mm

 // Copyright 2013 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.
 
 #import "ui/base/cocoa/appkit_utils.h"
 
 #include "base/mac/mac_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
 namespace {
@@ skipping 16 matching lines @@
 NSImage* GetImage(int image_id) {
   return ui::ResourceBundle::GetSharedInstance()
       .GetNativeImageNamed(image_id)
       .ToNSImage();
 }
 
 // The action to take when the user double-clicks in the window title bar.
 DoubleClickAction WindowTitleBarDoubleClickAction() {
   // El Capitan introduced a Dock preference to configure the window title bar
   // double-click action (Minimize, Maximize, or nothing).
-  if (base::mac::IsOSElCapitanOrLater()) {
+  if (base::mac::IsAtLeastOS10_11()) {
     NSString* doubleClickAction = [[NSUserDefaults standardUserDefaults]
                                       objectForKey:@"AppleActionOnDoubleClick"];
 
     if ([doubleClickAction isEqualToString:@"Minimize"]) {
       return DoubleClickAction::MINIMIZE;
     } else if ([doubleClickAction isEqualToString:@"Maximize"]) {
       return DoubleClickAction::MAXIMIZE;
     }
 
     return DoubleClickAction::NONE;
   }
 
   // Determine minimize using an undocumented method in Cocoa. If we're
   // running on an earlier version of the OS that doesn't implement it,
   // just default to the minimize action.
   BOOL methodImplemented =
       [NSWindow respondsToSelector:@selector(_shouldMiniaturizeOnDoubleClick)];
   if (!methodImplemented ||
       [NSWindow performSelector:@selector(_shouldMiniaturizeOnDoubleClick)]) {
     return DoubleClickAction::MINIMIZE;
   }
 
   // At this point _shouldMiniaturizeOnDoubleClick has returned |NO|. On
   // Yosemite, that means a double-click should Maximize the window, and on
   // all prior OSes a double-click should do nothing.
-  return base::mac::IsOSYosemite() ? DoubleClickAction::MAXIMIZE
-                                   : DoubleClickAction::NONE;
+  return base::mac::IsOS10_10() ? DoubleClickAction::MAXIMIZE
+                                : DoubleClickAction::NONE;
 }
 
 }  // namespace
 
 namespace ui {
 
 void DrawNinePartImage(NSRect frame,
                        const NinePartImageIds& image_ids,
                        NSCompositingOperation operation,
                        CGFloat alpha,
@@ skipping 28 matching lines @@
   }
 }
 
 bool ForceClickInvokesQuickLook() {
   return [[NSUserDefaults standardUserDefaults]
              integerForKey:@"com.apple.trackpad.forceClick"] ==
          static_cast<NSInteger>(ForceTouchAction::QUICK_LOOK);
 }
 
 }  // namespace ui