Revert of Remove EF_FUNCTION_KEY and EF_NUMPAD_KEY.

ui/events/keycodes/dom4/keycode_converter.h

Index: ui/events/keycodes/dom4/keycode_converter.h
diff --git a/ui/events/keycodes/dom4/keycode_converter.h b/ui/events/keycodes/dom4/keycode_converter.h
index 1f1fed0de350c462339cf3d1035c40e164d12866..1ed0d1231488ebf85e015d5075980b98c8d31d56 100644
--- a/ui/events/keycodes/dom4/keycode_converter.h
+++ b/ui/events/keycodes/dom4/keycode_converter.h
@@ -15,8 +15,6 @@
 
 enum class DomCode;
 enum class DomKey;
-
-enum class DomKeyLocation { STANDARD, LEFT, RIGHT, NUMPAD };
 
 // This structure is used to define the keycode mapping table.
 // It is defined here because the unittests need access to it.
@@ -64,11 +62,6 @@
   // Convert a DomCode into a UI Events |code| string value.
   static const char* DomCodeToCodeString(DomCode dom_code);
 
-  // Return the DomKeyLocation of a DomCode. The DomKeyLocation distinguishes
-  // keys with the same meaning, and therefore the same DomKey or KeyboardCode
-  // (VKEY), and corresponds to the DOM UI Events |KeyboardEvent.location|.
-  static DomKeyLocation DomCodeToLocation(DomCode dom_code);
-
   // Convert a UI Events |key| string value into a DomKey.
   static DomKey KeyStringToDomKey(const char* key);