Convert chromeos::EventRewriter to a ui::EventRewriter

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 72 matching lines @@
   EF_CONTROL_DOWN        = 1 << 2,
   EF_ALT_DOWN            = 1 << 3,
   EF_LEFT_MOUSE_BUTTON   = 1 << 4,
   EF_MIDDLE_MOUSE_BUTTON = 1 << 5,
   EF_RIGHT_MOUSE_BUTTON  = 1 << 6,
   EF_COMMAND_DOWN        = 1 << 7,  // Only useful on OSX
   EF_EXTENDED            = 1 << 8,  // Windows extended key (see WM_KEYDOWN doc)
   EF_IS_SYNTHESIZED      = 1 << 9,
   EF_ALTGR_DOWN          = 1 << 10,
   EF_MOD3_DOWN           = 1 << 11,
+  EF_NUMPAD              = 1 << 12, // Key originates from number pad (Xkb only)

[sadrul, 2014/04/14 21:51:32]

Maybe this should be separate KeyEventFlags (like MouseEventFlags below)

[kpschoedel, 2014/04/15 14:08:30]

OK. Is the intent that KeyEventFlags overlap MouseEventFlags (i.e. also start
from 1<<16)?

 };
 
 // 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 13 matching lines @@
   EP_PREDISPATCH,
   EP_PRETARGET,
   EP_TARGET,
   EP_POSTTARGET,
   EP_POSTDISPATCH
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_EVENT_CONSTANTS_H_