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

ui/base/cocoa/appkit_utils.mm

Index: ui/base/cocoa/appkit_utils.mm
diff --git a/ui/base/cocoa/appkit_utils.mm b/ui/base/cocoa/appkit_utils.mm
index 1b0a61b2060314e77da4814f97610fc8f9590ded..95483cfd284ed3bf61333d05c78ea3cd2b526d4d 100644
--- a/ui/base/cocoa/appkit_utils.mm
+++ b/ui/base/cocoa/appkit_utils.mm
@@ -34,7 +34,7 @@ NSImage* GetImage(int image_id) {
 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"];
 
@@ -60,8 +60,8 @@ DoubleClickAction WindowTitleBarDoubleClickAction() {
   // 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