Add GetHardwareKeyboardLayoutName method instead of kHardwareLayout

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 21 matching lines @@
       : original(in_original), replacement(in_replacement) {}
   bool operator==(const ModifierKeyPair& rhs) const {
     // For CheckMap() in chromeos_keyboard_unittest.cc.
     return (rhs.original == original) && (rhs.replacement == replacement);
   }
   ModifierKey original;      // Replace the key with
   ModifierKey replacement;   // this key.
 };
 typedef std::vector<ModifierKeyPair> ModifierMap;
 
+// Returns the hardware layout name.
+extern std::string (*GetHardwareKeyboardLayoutName)();
+
 // Returns the current layout name like "us". On error, returns "".
 extern std::string (*GetCurrentKeyboardLayoutName)();
 
 // Sets the current keyboard layout to |layout_name|. This function does not
 // change the current mapping of the modifier keys. Returns true on success.
 extern bool (*SetCurrentKeyboardLayoutByName)(const std::string& layout_name);
 
 // Remaps modifier keys. This function does not change the current keyboard
 // layout. Returns true on success.
 // Notice: For now, you can't remap Left Control and Left Alt keys to CapsLock.
@@ skipping 77 matching lines @@
 //      { kLeftControlKey -> kVoidKey },
 //      { kLeftAltKey -> kLeftAltKey }}
 bool ExtractModifierMapFromFullXkbLayoutName(
     const std::string& full_xkb_layout_name,
     const StringToModifierMap& string_to_modifier_map,
     ModifierMap* out_modifier_map);
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_KEYBOARD_H_