Enable to show input mode indicator with keyboard layout only input methods.

chrome/browser/chromeos/input_method/input_method_manager_impl.cc

 // Copyright (c) 2012 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 "chrome/browser/chromeos/input_method/input_method_manager_impl.h"
 
 #include <algorithm>  // std::find
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 197 matching lines @@
     new_active_input_method_ids.push_back(input_method_id);
 
   return true;
 }
 
 // Starts or stops the system input method framework as needed.
 void InputMethodManagerImpl::ReconfigureIMFramework() {
   if (component_extension_ime_manager_->IsInitialized())
     LoadNecessaryComponentExtensions();
 
-  if (ContainsOnlyKeyboardLayout(active_input_method_ids_)) {
+  const bool keyboard_layout_only =
+      ContainsOnlyKeyboardLayout(active_input_method_ids_);
+
+  // Initialize candidate window controller and widgets such as
+  // candidate window, infolist and mode indicator.  Note, mode
+  // indicator is used by only keyboard layout input methods.
+  if (!keyboard_layout_only || active_input_method_ids_.size() > 1) {
+    MaybeInitializeCandidateWindowController();
+  }
+
+  if (keyboard_layout_only) {
     // Do NOT call ibus_controller_->Stop(); here to work around a crash issue

[Seigo Nonaka, 2013/11/06 02:47:08]

This comment makes no sense now.
Please remove this comment and simply call Start() function in
!keyboard_layout_only.

As you know, IBus no longer lives in Chrome OS, so that calling Start() also
does not make sense. Probably necessary for working with old code. So that,
please remove calling Start() if possible.

     // at crbug.com/27051.
     // TODO(yusukes): We can safely call Stop(); here once crbug.com/26443
     // is implemented.
   } else {
-    MaybeInitializeCandidateWindowController();
     IBusDaemonController::GetInstance()->Start();
   }
 }
 
 bool InputMethodManagerImpl::EnableInputMethod(
     const std::string& input_method_id) {
   if (!EnableInputMethodImpl(input_method_id, active_input_method_ids_))
     return false;
 
   ReconfigureIMFramework();
@@ skipping 627 matching lines @@
   else
     DVLOG(1) << "Failed to initialize the candidate window controller";
 }
 
 bool InputMethodManagerImpl::IsIBusConnectionAlive() {
   return DBusThreadManager::Get() && DBusThreadManager::Get()->GetIBusClient();
 }
 
 }  // namespace input_method
 }  // namespace chromeos