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

device/udev_linux/udev_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_UDEV_LOADER_H_
 #define DEVICE_UDEV_LINUX_UDEV_LOADER_H_
 
 #include <stdarg.h>
 #include <sys/types.h>
 #include <sys/stat.h>
@@ skipping 34 matching lines @@
   virtual const char* udev_device_get_property_value(udev_device* udev_device,
                                                      const char* key) = 0;
   virtual const char* udev_device_get_subsystem(udev_device* udev_device) = 0;
   virtual const char* udev_device_get_sysattr_value(udev_device* udev_device,
                                                     const char* sysattr) = 0;
   virtual const char* udev_device_get_sysname(udev_device* udev_device) = 0;
   virtual const char* udev_device_get_syspath(udev_device* udev_device) = 0;
   virtual udev_device* udev_device_new_from_devnum(udev* udev,
                                                    char type,
                                                    dev_t devnum) = 0;
+  virtual udev_device* udev_device_new_from_subsystem_sysname(
+      udev* udev,
+      const char* subsystem,
+      const char* sysname) = 0;
   virtual udev_device* udev_device_new_from_syspath(udev* udev,
                                                     const char* syspath) = 0;
   virtual void udev_device_unref(udev_device* udev_device) = 0;
   virtual int udev_enumerate_add_match_subsystem(udev_enumerate* udev_enumerate,
                                                  const char* subsystem) = 0;
   virtual udev_list_entry* udev_enumerate_get_list_entry(
       udev_enumerate* udev_enumerate) = 0;
   virtual udev_enumerate* udev_enumerate_new(udev* udev) = 0;
   virtual int udev_enumerate_scan_devices(udev_enumerate* udev_enumerate) = 0;
   virtual void udev_enumerate_unref(udev_enumerate* udev_enumerate) = 0;
@@ skipping 17 matching lines @@
       void (*log_fn)(struct udev* udev, int priority,
                      const char* file, int line,
                      const char* fn, const char* format, va_list args)) = 0;
   virtual void udev_set_log_priority(struct udev* udev, int priority) = 0;
   virtual void udev_unref(udev* udev) = 0;
 };
 
 }  // namespace device
 
 #endif  // DEVICE_UDEV_LINUX_UDEV_LOADER_H_