Revise ui::DomKey to unify character and non-character codes.

ui/base/ime/chromeos/character_composer_unittest.cc

Index: ui/base/ime/chromeos/character_composer_unittest.cc
diff --git a/ui/base/ime/chromeos/character_composer_unittest.cc b/ui/base/ime/chromeos/character_composer_unittest.cc
index d9fc844a3147a6913733809b94959039affd6b8b..0569963c9515476063f52eec3cf07d4ad9a9b630 100644
--- a/ui/base/ime/chromeos/character_composer_unittest.cc
+++ b/ui/base/ime/chromeos/character_composer_unittest.cc
@@ -34,7 +34,7 @@ class CharacterComposerTest : public testing::Test {
   KeyEvent* DeadKeyPress(base::char16 combining_character) const {
     KeyEvent* event =
         new KeyEvent(ET_KEY_PRESSED, VKEY_UNKNOWN, DomCode::NONE, EF_NONE,
-                     DomKey::DEAD, combining_character, EventTimeForNow());
+                     DomKey::Dead(combining_character), EventTimeForNow());
     return event;
   }
 
@@ -59,7 +59,7 @@ class CharacterComposerTest : public testing::Test {
                             int flags,
                             base::char16 character) const {
     KeyEvent* event = new KeyEvent(ET_KEY_PRESSED, vkey, code, flags,
-                                   CharacterToDomKey(character), character,
+                                   character,
                                    EventTimeForNow());
     return event;
   }