Revert 281282 "Revert 281133 "chrome.hid: enrich model with repo..."

trunk/src/device/hid/hid_utils_mac.cc

-// Copyright 2014 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/hid/hid_utils_mac.h"
-
-#include "base/mac/foundation_util.h"
-#include "base/strings/sys_string_conversions.h"
-
-namespace device {
-
-int32_t GetHidIntProperty(IOHIDDeviceRef device, CFStringRef key) {
-  int32_t value;
-  if (TryGetHidIntProperty(device, key, &value))
-    return value;
-  return 0;
-}
-
-std::string GetHidStringProperty(IOHIDDeviceRef device, CFStringRef key) {
-  std::string value;
-  TryGetHidStringProperty(device, key, &value);
-  return value;
-}
-
-bool TryGetHidIntProperty(IOHIDDeviceRef device,
-                          CFStringRef key,
-                          int32_t* result) {
-  CFNumberRef ref = base::mac::CFCast<CFNumberRef>(
-      IOHIDDeviceGetProperty(device, key));
-  return ref && CFNumberGetValue(ref, kCFNumberSInt32Type, result);
-}
-
-bool TryGetHidStringProperty(IOHIDDeviceRef device,
-                             CFStringRef key,
-                             std::string* result) {
-  CFStringRef ref = base::mac::CFCast<CFStringRef>(
-      IOHIDDeviceGetProperty(device, key));
-  if (!ref) {
-    return false;
-  }
-  *result = base::SysCFStringRefToUTF8(ref);
-  return true;
-}
-
-}  // namespace device