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

ui/events/event.cc

Index: ui/events/event.cc
diff --git a/ui/events/event.cc b/ui/events/event.cc
index 4649e24db9f8722b8bad8d3a7aeeed8acaf9540d..06816e3036727c70878618ee8854b3d78a518b86 100644
--- a/ui/events/event.cc
+++ b/ui/events/event.cc
@@ -808,11 +808,10 @@ void KeyEvent::ApplyLayout() const {
   // characters in order to use it for shortcut keys.  GetCharacterFromKeyCode
   // returns 'a' for VKEY_A even if the key is actually bound to 'à' in X11.
   // GetCharacterFromXEvent returns 'à' in that case.
-  if (!IsControlDown() && native_event()) {
-    character_ = GetCharacterFromXEvent(native_event());
-    // TODO(kpschoedel): set key_ field for X11.
-    return;
-  }
+  character_ = (IsControlDown() || !native_event()) ?
+      GetCharacterFromKeyCode(key_code_, flags()) :
+      GetCharacterFromXEvent(native_event());
+  GetMeaningFromKeyCode(key_code_, flags(), &key_, &character_);
 #elif defined(USE_OZONE)
   if (KeyboardLayoutEngineManager::GetKeyboardLayoutEngine()->Lookup(
           code, flags(), &key_, &character_, &dummy_key_code,