Use g_spawn_async instead of _sync.

chromeos_keyboard.h

 // Copyright (c) 2010 The Chromium OS 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 CHROMEOS_KEYBOARD_H_
 #define CHROMEOS_KEYBOARD_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 82 matching lines @@
 // Creates a full XKB layout name like
 //   "gb(extd)+chromeos(leftcontrol_disabled_leftalt)+version(v1_7_r7),us"
 // from modifier key mapping and |layout_name|, such as "us", "us(dvorak)", and
 // "gb(extd)". Returns an empty string on error.
 // If |use_version| is false, the function does not add "+version(...)" to the
 // layout name. See http://crosbug.com/6261 for details.
 std::string CreateFullXkbLayoutName(const std::string& layout_name,
                                     const ModifierMap& modifire_map,
                                     bool use_version);
 
-// Returns a layout name which is used in libcros from a full XKB layout name.
-// On error, it returns an empty string.
-// Example: "gb(extd)+chromeos(leftcontrol_disabled_leftalt),us" -> "gb(extd)"
-std::string ExtractLayoutNameFromFullXkbLayoutName(
-    const std::string& full_xkb_layout_name);
-
-// Initializes a std::map that holds mappings like:
-//   "leftcontrol_disabled_leftalt" ->
-//     {{ kSearchKey -> kLeftControlKey },
-//      { kLeftControlKey -> kVoidKey },
-//      { kLeftAltKey -> kLeftAltKey }}
-void InitializeStringToModifierMap(
-    StringToModifierMap* out_string_to_modifier_map);
-
-// Returns a mapping of modifier keys from a full XKB layout name. Returns true
-// on success.
-// Example: "gb(extd)+chromeos(leftcontrol_disabled_leftalt),us" ->
-//     {{ kSearchKey -> kLeftControlKey },
-//      { kLeftControlKey -> kVoidKey },
-//      { kLeftAltKey -> kLeftAltKey }}
-bool ExtractModifierMapFromFullXkbLayoutName(
-    const std::string& full_xkb_layout_name,
-    const StringToModifierMap& string_to_modifier_map,
-    ModifierMap* out_modifier_map);
-
 // Returns true if caps lock is enabled.
+// ONLY FOR UNIT TEST. DO NOT USE THIS FUNCTION.
 bool CapsLockIsEnabled();
 
 // Sets the caps lock status to |enable_caps_lock|.
 void SetCapsLockEnabled(bool enabled);
 
 // Returns true if |key| is in |modifier_map| as replacement.
 bool ContainsModifierKeyAsReplacement(
     const ModifierMap& modifier_map, ModifierKey key);
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_KEYBOARD_H_