[KeyboardEvent] Add embedder APIs to translate between Dom |key| enum and strings

ui/events/event.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_H_
 #define UI_EVENTS_EVENT_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/event_types.h"
@@ skipping 720 matching lines @@
   // TODO(msw): Additional work may be needed for analogues on other platforms.
   bool IsUnicodeKeyCode() const;
 
   // Returns the DOM .code (physical key identifier) for a keystroke event.
   DomCode code() const { return code_; };
   std::string GetCodeString() const;
 
   // Returns the DOM .key (layout meaning) for a keystroke event.
   DomKey GetDomKey() const;
 
+  // Returns either DomKey or Unicode value + DomKey::CHARACTER.
+  int GetDomKeyOrCharacter() const;
+
   // Normalizes flags_ so that it describes the state after the event.
   // (Native X11 event flags describe the state before the event.)
   void NormalizeFlags();
 
  protected:
   friend class KeyEventTestApi;
 
   // This allows a subclass TranslatedKeyEvent to be a non character event.
   void set_is_char(bool is_char) { is_char_ = is_char; }
 
@@ skipping 120 matching lines @@
 
   const GestureEventDetails& details() const { return details_; }
 
  private:
   GestureEventDetails details_;
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_EVENT_H_