Make IME extensions decide when to show the keyboard.

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 <stdint.h>
 
 #include <algorithm>  // std::find
 #include <memory>
@@ skipping 1235 matching lines @@
   auto j = overridden_ref.find("&", i + 1);
   if (j == std::string::npos) {
     overridden_ref += "." + keyset;
   } else {
     overridden_ref.replace(j, 0, "." + keyset);
   }
 
   GURL::Replacements replacements;
   replacements.SetRefStr(overridden_ref);
   keyboard::SetOverrideContentUrl(url.ReplaceComponents(replacements));
+
+  keyboard::KeyboardController* keyboard_controller =
+      keyboard::KeyboardController::GetInstance();
+  if (keyboard_controller)
+    keyboard_controller->Reload();
 }
 
 bool InputMethodManagerImpl::IsEmojiHandwritingVoiceOnImeMenuEnabled() {
   return base::FeatureList::IsEnabled(features::kEHVInputOnImeMenu);
 }
 
 }  // namespace input_method
 }  // namespace chromeos