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

chrome/browser/ui/cocoa/apps/native_app_window_cocoa_browsertest.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.
 
 #include "extensions/browser/app_window/native_app_window.h"
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/mac/foundation_util.h"
 #import "base/mac/mac_util.h"
@@ skipping 538 matching lines @@
   BOOL can_fullscreen =
       ![NSStringFromClass([ns_window class]) isEqualTo:@"AppFramelessNSWindow"];
   // The window can fullscreen and maximize.
   EXPECT_EQ(can_fullscreen, !!([ns_window collectionBehavior] &
                                NSWindowCollectionBehaviorFullScreenPrimary));
 
   // In OSX 10.10+, the zoom button performs the zoom action rather than the
   // fullscreen action. The above check that collectionBehavior does not include
   // NSWindowCollectionBehaviorFullScreenPrimary is sufficient to determine that
   // the window can't be fullscreened.
-  if (base::mac::IsOSMavericks()) {
+  if (base::mac::IsOS10_9()) {
     EXPECT_EQ(can_fullscreen,
               [[ns_window standardWindowButton:NSWindowZoomButton] isEnabled]);
   }
 
   // Set a maximum size.
   app_window->SetContentSizeConstraints(gfx::Size(), gfx::Size(200, 201));
   EXPECT_EQ(200, [ns_window contentMaxSize].width);
   EXPECT_EQ(201, [ns_window contentMaxSize].height);
   NSView* web_contents = app_window->web_contents()->GetNativeView();
   EXPECT_EQ(200, [web_contents frame].size.width);
@@ skipping 59 matching lines @@
   // to the frame view having a layer with 10.10 SDK, but is probably a bug
   // since it doesn't manifest on 10.10. See http://crbug.com/508722.
   // In this case, take a screenshot using the CGWindowList API instead. The
   // bitmap is now in the display's color space, so expected colors need to be
   // converted.
   // TODO(jackhou): Update this if it is fixed in AppKit, or if other
   // platform/SDK combinations need it.
   // NOTE: This doesn't work with Views, but the regular test does, so use that.
   bool mac_views = base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableMacViewsNativeAppWindows);
-  if (base::mac::IsOSMavericks() && !mac_views) {
+  if (base::mac::IsOS10_9() && !mac_views) {
     // -[NSView setNeedsDisplay:YES] doesn't synchronously display the view, it
     // gets drawn by another event in the queue, so let that run first.
     content::RunAllPendingInMessageLoop();
     base::ScopedCFTypeRef<CGImageRef> cg_image(CGWindowListCreateImage(
         CGRectNull, kCGWindowListOptionIncludingWindow, [window windowNumber],
         kCGWindowImageBoundsIgnoreFraming));
     return [[[NSBitmapImageRep alloc] initWithCGImage:cg_image] autorelease];
   }
 
   NSView* frame_view = [[window contentView] superview];
@@ skipping 39 matching lines @@
   [expected_color getComponents:expected_components];
   [color getComponents:color_components];
   EXPECT_NEAR(expected_components[0], color_components[0], 0.01);
   EXPECT_NEAR(expected_components[1], color_components[1], 0.01);
   EXPECT_NEAR(expected_components[2], color_components[2], 0.01);
 }
 
 INSTANTIATE_TEST_CASE_P(NativeAppWindowCocoaBrowserTestInstance,
                         NativeAppWindowCocoaBrowserTest,
                         ::testing::Bool());