Switch HidDeviceId from IORegistry path to IORegistry entry ID.

device/hid/hid_device_info.h

 // 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.
 
 #ifndef DEVICE_HID_HID_DEVICE_INFO_H_
 #define DEVICE_HID_HID_DEVICE_INFO_H_
 
 #include <string>
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "build/build_config.h"
 #include "device/hid/hid_collection_info.h"
 
 namespace device {
 
 enum HidBusType {
   kHIDBusTypeUSB = 0,
   kHIDBusTypeBluetooth = 1,
 };
 
+#if defined(OS_MACOSX)
+typedef uint64_t HidDeviceId;
+const uint64_t kInvalidHidDeviceId = -1;
+#else
 typedef std::string HidDeviceId;
 extern const char kInvalidHidDeviceId[];
+#endif
 
 class HidDeviceInfo : public base::RefCountedThreadSafe<HidDeviceInfo> {
  public:
   HidDeviceInfo(const HidDeviceId& device_id,
                 uint16_t vendor_id,
                 uint16_t product_id,
                 const std::string& product_name,
                 const std::string& serial_number,
                 HidBusType bus_type,
                 const std::vector<uint8> report_descriptor);
@@ skipping 52 matching lines @@
   size_t max_input_report_size_;
   size_t max_output_report_size_;
   size_t max_feature_report_size_;
 
   DISALLOW_COPY_AND_ASSIGN(HidDeviceInfo);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_HID_HID_DEVICE_INFO_H_