Move UdevDecodeString from media/midi to device/udev_linux

media/midi/midi_manager_alsa.h

Index: media/midi/midi_manager_alsa.h
diff --git a/media/midi/midi_manager_alsa.h b/media/midi/midi_manager_alsa.h
index d06ff760c0483cf0bd4b6e075ed346cd5deba350..86eb18decd49f8e3398b3b49e238a24b1acef9c7 100644
--- a/media/midi/midi_manager_alsa.h
+++ b/media/midi/midi_manager_alsa.h
@@ -57,16 +57,12 @@ class MEDIA_EXPORT MidiManagerAlsa : public MidiManager {
 
     // Extracts the manufacturer using heuristics and a variety of sources.
     static std::string ExtractManufacturerString(
-        const std::string& udev_id_vendor_enc,
+        const std::string& udev_id_vendor,
         const std::string& udev_id_vendor_id,
         const std::string& udev_id_vendor_from_database,
         const std::string& alsa_name,
         const std::string& alsa_longname);
 
-    // TODO(agoode): Move this into a common place. Maybe device/udev_linux?
-    // Decodes just \xXX in strings.
-    static std::string UnescapeUdev(const std::string& s);
-
     std::string alsa_name_;
     std::string manufacturer_;
     std::string alsa_driver_;