Revert of Remove EF_FUNCTION_KEY and EF_NUMPAD_KEY.

ui/events/event_constants.h

 // Copyright (c) 2012 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 UI_EVENTS_EVENT_CONSTANTS_H_
 #define UI_EVENTS_EVENT_CONSTANTS_H_
 
 namespace ui {
 
 // Event types. (prefixed because of a conflict with windows headers)
@@ skipping 82 matching lines @@
                                      // doc)
   EF_IS_SYNTHESIZED       = 1 << 9,
   EF_ALTGR_DOWN           = 1 << 10,
   EF_MOD3_DOWN            = 1 << 11,
   EF_BACK_MOUSE_BUTTON    = 1 << 12,
   EF_FORWARD_MOUSE_BUTTON = 1 << 13,
 };
 
 // Flags specific to key events
 enum KeyEventFlags {
-  EF_IME_FABRICATED_KEY = 1 << 16,  // Key event fabricated by the underlying
+  EF_NUMPAD_KEY         = 1 << 16,  // Key originates from number pad (Xkb only)
+  EF_IME_FABRICATED_KEY = 1 << 17,  // Key event fabricated by the underlying
                                     // IME without a user action.
                                     // (Linux X11 only)
-  EF_IS_REPEAT          = 1 << 17,
-  EF_FINAL              = 1 << 18,  // Do not remap; the event was created with
+  EF_IS_REPEAT          = 1 << 18,
+  EF_FUNCTION_KEY       = 1 << 19,  // Key originates from function key row
+  EF_FINAL              = 1 << 20,  // Do not remap; the event was created with
                                     // the desired final values.
 };
 
 // Flags specific to mouse events
 enum MouseEventFlags {
   EF_IS_DOUBLE_CLICK     = 1 << 16,
   EF_IS_TRIPLE_CLICK     = 1 << 17,
   EF_IS_NON_CLIENT       = 1 << 18,
   EF_FROM_TOUCH          = 1 << 19,  // Indicates this mouse event is generated
                                      // from an unconsumed touch/gesture event.
@@ skipping 26 matching lines @@
 };
 
 // Device ID for Touch and Key Events.
 enum EventDeviceId {
   ED_UNKNOWN_DEVICE = -1
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_EVENT_CONSTANTS_H_