Add udev_device_new_from_subsystem_sysname to udev, for use in Web MIDI on Linux

device/udev_linux/udev1_loader.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_UDEV_LINUX_UDEV1_LOADER_H_
 #define DEVICE_UDEV_LINUX_UDEV1_LOADER_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "device/udev_linux/udev_loader.h"
 
@@ skipping 18 matching lines @@
   const char* udev_device_get_property_value(udev_device* udev_device,
                                              const char* key) override;
   const char* udev_device_get_subsystem(udev_device* udev_device) override;
   const char* udev_device_get_sysattr_value(udev_device* udev_device,
                                             const char* sysattr) override;
   const char* udev_device_get_sysname(udev_device* udev_device) override;
   const char* udev_device_get_syspath(udev_device* udev_device) override;
   udev_device* udev_device_new_from_devnum(udev* udev,
                                            char type,
                                            dev_t devnum) override;
+  udev_device* udev_device_new_from_subsystem_sysname(
+      udev* udev,
+      const char* subsystem,
+      const char* sysname) override;
   udev_device* udev_device_new_from_syspath(udev* udev,
                                             const char* syspath) override;
   void udev_device_unref(udev_device* udev_device) override;
   int udev_enumerate_add_match_subsystem(udev_enumerate* udev_enumerate,
                                          const char* subsystem) override;
   udev_list_entry* udev_enumerate_get_list_entry(
       udev_enumerate* udev_enumerate) override;
   udev_enumerate* udev_enumerate_new(udev* udev) override;
   int udev_enumerate_scan_devices(udev_enumerate* udev_enumerate) override;
   void udev_enumerate_unref(udev_enumerate* udev_enumerate) override;
@@ skipping 21 matching lines @@
   void udev_unref(udev* udev) override;
 
   scoped_ptr<LibUdev1Loader> lib_loader_;
 
   DISALLOW_COPY_AND_ASSIGN(Udev1Loader);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_UDEV_LINUX_UDEV1_LOADER_H_