Absence of keyboard layout is fatal.

ui/events/ozone/layout/xkb/xkb_keyboard_layout_engine.cc

 // Copyright 2014 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.
 
 #include "ui/events/ozone/layout/xkb/xkb_keyboard_layout_engine.h"
 
 #include <xkbcommon/xkbcommon-names.h>
 
 #include "base/bind.h"
 #include "base/location.h"
@@ skipping 712 matching lines @@
     scoped_ptr<char, base::FreeDeleter> keymap_str) {
   if (keymap_str) {
     xkb_keymap* keymap = xkb_map_new_from_string(
         xkb_context_.get(), keymap_str.get(), XKB_KEYMAP_FORMAT_TEXT_V1,
         XKB_KEYMAP_COMPILE_NO_FLAGS);
     XkbKeymapEntry entry = {layout_name, keymap};
     xkb_keymaps_.push_back(entry);
     if (layout_name == current_layout_name_)
       SetKeymap(keymap);
   } else {
     LOG(ERROR) << "Keymap file failed to load: " << layout_name;

[spang, 2015/01/28 20:00:10]

I think you should put it in here instead.

[kpschoedel, 2015/01/28 21:22:19]

Done.

   }
 }
 
 bool XkbKeyboardLayoutEngine::UsesISOLevel5Shift() const {
   // NOTIMPLEMENTED();
   return false;
 }
 
 bool XkbKeyboardLayoutEngine::UsesAltGr() const {
   // NOTIMPLEMENTED();
@@ skipping 92 matching lines @@
   // NumLock is always on.
   xkb_flags |= num_lock_mod_mask_;
   return xkb_flags;
 }
 
 bool XkbKeyboardLayoutEngine::XkbLookup(xkb_keycode_t xkb_keycode,
                                         xkb_mod_mask_t xkb_flags,
                                         xkb_keysym_t* xkb_keysym,
                                         base::char16* character) const {
   if (!xkb_state_) {
-    LOG(ERROR) << "No current XKB state";
+    LOG(FATAL) << "No current XKB state";
     return false;
   }
   xkb_state_update_mask(xkb_state_.get(), xkb_flags, 0, 0, 0, 0, 0);
   *xkb_keysym = xkb_state_key_get_one_sym(xkb_state_.get(), xkb_keycode);
   if (*xkb_keysym == XKB_KEY_NoSymbol)
     return false;
   uint32_t c = xkb_state_key_get_utf32(xkb_state_.get(), xkb_keycode);
   DLOG_IF(ERROR, c != (c & 0xFFFF)) << "Non-BMP character:" << c;
   *character = static_cast<base::char16>(c);
   return true;
@@ skipping 99 matching lines @@
     if (close_index == std::string::npos)
       close_index = layout_name.size();
     *layout_variant = layout_name.substr(parentheses_index + 1,
                                          close_index - parentheses_index - 1);
   } else if (dash_index != std::string::npos) {
     *layout_id = layout_name.substr(0, dash_index);
     *layout_variant = layout_name.substr(dash_index + 1);
   }
 }
 }  // namespace ui