mac: Replace base::mac::ScopedCFTypeRef with base::ScopedCFTypeRef.

sync/util/get_session_name_mac.mm

 // Copyright (c) 2012 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 "sync/util/get_session_name_mac.h"
 
 #import <SystemConfiguration/SCDynamicStoreCopySpecific.h>
 #include <sys/sysctl.h>
 
 #include "base/mac/scoped_cftyperef.h"
 #include "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
 
 namespace syncer {
 namespace internal {
 
 std::string GetHardwareModelName() {
   // Do not use NSHost currentHost, as it's very slow. http://crbug.com/138570
   SCDynamicStoreContext context = { 0, NULL, NULL, NULL };
-  base::mac::ScopedCFTypeRef<SCDynamicStoreRef> store(
-      SCDynamicStoreCreate(kCFAllocatorDefault, CFSTR("chrome_sync"),
-                           NULL, &context));
-  base::mac::ScopedCFTypeRef<CFStringRef> machine_name(
+  base::ScopedCFTypeRef<SCDynamicStoreRef> store(SCDynamicStoreCreate(
+      kCFAllocatorDefault, CFSTR("chrome_sync"), NULL, &context));
+  base::ScopedCFTypeRef<CFStringRef> machine_name(
       SCDynamicStoreCopyLocalHostName(store.get()));
   if (machine_name.get())
     return base::SysCFStringRefToUTF8(machine_name.get());
 
   // Fall back to get computer name.
-  base::mac::ScopedCFTypeRef<CFStringRef> computer_name(
+  base::ScopedCFTypeRef<CFStringRef> computer_name(
       SCDynamicStoreCopyComputerName(store.get(), NULL));
   if (computer_name.get())
     return base::SysCFStringRefToUTF8(computer_name.get());
 
   // If all else fails, return to using a slightly nicer version of the
   // hardware model.
   char modelBuffer[256];
   size_t length = sizeof(modelBuffer);
   if (!sysctlbyname("hw.model", modelBuffer, &length, NULL, 0)) {
     for (size_t i = 0; i < length; i++) {
       if (IsAsciiDigit(modelBuffer[i]))
         return std::string(modelBuffer, 0, i);
     }
     return std::string(modelBuffer, 0, length);
   }
   return "Unknown";
 }
 
 }  // namespace internal
 }  // namespace syncer