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

device/bluetooth/bluetooth_adapter_mac.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 "device/bluetooth/bluetooth_adapter_mac.h"
 
 #import <IOBluetooth/objc/IOBluetoothDevice.h>
 #import <IOBluetooth/objc/IOBluetoothHostController.h>
 #include <stddef.h>
 
@@ skipping 50 matching lines @@
   BluetoothAdapterMac* adapter = new BluetoothAdapterMac();
   adapter->InitForTest(ui_task_runner);
   adapter->name_ = name;
   adapter->address_ = address;
   return adapter->weak_ptr_factory_.GetWeakPtr();
 }
 
 // static
 BluetoothUUID BluetoothAdapterMac::BluetoothUUIDWithCBUUID(CBUUID* uuid) {
   // UUIDString only available OS X >= 10.10.
-  DCHECK(base::mac::IsOSYosemiteOrLater());
+  DCHECK(base::mac::IsAtLeastOS10_10());
   std::string uuid_c_string = base::SysNSStringToUTF8([uuid UUIDString]);
   return device::BluetoothUUID(uuid_c_string);
 }
 
 BluetoothAdapterMac::BluetoothAdapterMac()
     : BluetoothAdapter(),
       classic_powered_(false),
       num_discovery_sessions_(0),
       classic_discovery_manager_(
           BluetoothDiscoveryManagerMac::CreateClassic(this)),
@@ skipping 152 matching lines @@
 void BluetoothAdapterMac::DeviceConnected(IOBluetoothDevice* device) {
   // TODO(isherman): Investigate whether this method can be replaced with a call
   // to +registerForConnectNotifications:selector:.
   DVLOG(1) << "Adapter registered a new connection from device with address: "
            << BluetoothClassicDeviceMac::GetDeviceAddress(device);
   ClassicDeviceAdded(device);
 }
 
 // static
 bool BluetoothAdapterMac::IsLowEnergyAvailable() {
-  return base::mac::IsOSYosemiteOrLater();
+  return base::mac::IsAtLeastOS10_10();
 }
 
 void BluetoothAdapterMac::RemovePairingDelegateInternal(
     BluetoothDevice::PairingDelegate* pairing_delegate) {}
 
 void BluetoothAdapterMac::SetCentralManagerForTesting(
     CBCentralManager* central_manager) {
   CHECK(BluetoothAdapterMac::IsLowEnergyAvailable());
   central_manager.delegate = low_energy_central_manager_delegate_;
   low_energy_central_manager_.reset(central_manager,
@@ skipping 370 matching lines @@
   std::string device_address =
       BluetoothLowEnergyDeviceMac::GetPeripheralHashAddress(peripheral);
   DevicesMap::const_iterator iter = devices_.find(device_address);
   if (iter == devices_.end()) {
     return nil;
   }
   return static_cast<BluetoothLowEnergyDeviceMac*>(iter->second);
 }
 
 }  // namespace device