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

ui/events/keycodes/keyboard_code_conversion.h

Index: ui/events/keycodes/keyboard_code_conversion.h
diff --git a/ui/events/keycodes/keyboard_code_conversion.h b/ui/events/keycodes/keyboard_code_conversion.h
index 8b92ba16394eaaebd48ccbacd86bed3ec453bc99..c312710b8be1f3dafee726c6e8a377d924083aad 100644
--- a/ui/events/keycodes/keyboard_code_conversion.h
+++ b/ui/events/keycodes/keyboard_code_conversion.h
@@ -70,6 +70,11 @@ EVENTS_BASE_EXPORT bool DomCodeToControlCharacter(DomCode dom_code,
                                                   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(base::char16 character);

[Wez, 2015/05/06 23:51:53]

nit: Using char16 here means we're limited to UCS2 (aka Basic Multilingual
Plane) code points - I doubt that there are any DomKey enum values that
correspond to GB13080 characters, but _technically_, this should be a 32-bit
parameter, to allow the full Unicode range to be expressed.

[kpschoedel, 2015/05/07 16:21:33]

Done.

+
 // 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