[Sync] Move //sync to //components/sync.

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"
-
-#include <stddef.h>
-#include <sys/sysctl.h>
-#import <SystemConfiguration/SCDynamicStoreCopySpecific.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::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::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 (base::IsAsciiDigit(modelBuffer[i]))
-        return std::string(modelBuffer, 0, i);
-    }
-    return std::string(modelBuffer, 0, length);
-  }
-  return "Unknown";
-}
-
-}  // namespace internal
-}  // namespace syncer