Set ui::KeyEvent::key_ (DOM Level 3 key) under X11.

ui/events/keycodes/keyboard_code_conversion.h

 // Copyright (c) 2011 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_KEYCODES_KEYBOARD_CODE_CONVERSION_H_
 #define UI_EVENTS_KEYCODES_KEYBOARD_CODE_CONVERSION_H_
 
 #include "base/compiler_specific.h"
 #include "base/strings/string16.h"
 #include "ui/events/events_base_export.h"
@@ skipping 52 matching lines @@
 // Returns true and sets the output parameters if the (dom_code, flags) pair
 // is interpreted as a control character; otherwise the output parameters
 // are untouched.
 EVENTS_BASE_EXPORT bool DomCodeToControlCharacter(DomCode dom_code,
                                                   int flags,
                                                   DomKey* dom_key,
                                                   base::char16* character,
                                                   KeyboardCode* key_code)
     WARN_UNUSED_RESULT;
 
+// Returns the DomKey value associated with an ASCII/Unicode character.
+// All printable characters and most other character codes use
+// DomKey::CHARACTER, but a few ASCII C0 codes have their own DomKey.
+EVENTS_BASE_EXPORT DomKey CharacterToDomKey(uint32 character);
+
 // Returns a Windows-based VKEY for a non-printable DOM Level 3 |key|.
 // The returned VKEY is non-located (e.g. VKEY_SHIFT).
 EVENTS_BASE_EXPORT KeyboardCode
 NonPrintableDomKeyToKeyboardCode(DomKey dom_key);
 
 // Determine the non-located VKEY corresponding to a located VKEY.
 // Most modifier keys have two kinds of KeyboardCode: located (e.g.
 // VKEY_LSHIFT and VKEY_RSHIFT), that indentify one of two specific
 // physical keys, and non-located (e.g. VKEY_SHIFT) that identify
 // only the operation.
 EVENTS_BASE_EXPORT KeyboardCode
 LocatedToNonLocatedKeyboardCode(KeyboardCode key_code);
 
 // Determine the located VKEY corresponding to a non-located VKEY.
 EVENTS_BASE_EXPORT KeyboardCode
 NonLocatedToLocatedKeyboardCode(KeyboardCode key_code, DomCode dom_code);
 
 // Returns a DOM Level 3 |code| from a Windows-based VKEY value.
 // This assumes a US layout and should only be used when |code| cannot be
 // determined from a physical scan code, for example when a key event was
 // generated synthetically by JavaScript with only a VKEY value supplied.
 EVENTS_BASE_EXPORT DomCode UsLayoutKeyboardCodeToDomCode(KeyboardCode key_code);
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_KEYCODES_KEYBOARD_CODE_CONVERSION_H_