[ChromeOS] Expose keyboard remapping to signin screen.

chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc

 // Copyright (c) 2013 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/ui/webui/chromeos/login/signin_screen_handler.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <vector>
@@ skipping 658 matching lines @@
 
 void SigninScreenHandler::SetFocusPODCallbackForTesting(
     base::Closure callback) {
   test_focus_pod_callback_ = callback;
 }
 
 void SigninScreenHandler::ZeroOfflineTimeoutForTesting() {
   zero_offline_timeout_for_test_ = true;
 }
 
+bool SigninScreenHandler::GetKeyboardRemappedPrefValue(
+    const std::string& pref_name,
+    int* value) {
+  if (!focused_pod_account_id_ || !focused_pod_account_id_->is_valid() ||
+      !user_manager::known_user::GetIntegerPref(*focused_pod_account_id_,
+                                                pref_name, value))
+    return false;
+  return true;

[xiyuan, 2017/02/22 18:50:58]

nit: get rid of "if" ?

return focused_pod_account_id_ && focused_pod_account_id_->is_valid() &&
    user_manager::known_user::GetIntegerPref(*focused_pod_account_id_,
                                             pref_name, value));

[xdai1, 2017/02/22 19:26:30]

Done.

+}
+
 // SigninScreenHandler, private: -----------------------------------------------
 
 void SigninScreenHandler::ShowImpl() {
   if (!page_is_ready()) {
     show_on_init_ = true;
     return;
   }
 
   if (!ime_state_.get())
     ime_state_ = input_method::InputMethodManager::Get()->GetActiveIMEState();
@@ skipping 948 matching lines @@
   rate.initial_delay_in_ms = auto_repeat_delay;
   rate.repeat_interval_in_ms = auto_repeat_interval;
   input_method::InputMethodManager::Get()
       ->GetImeKeyboard()
       ->SetAutoRepeatEnabled(true);
   input_method::InputMethodManager::Get()->GetImeKeyboard()->SetAutoRepeatRate(
       rate);
 }
 
 }  // namespace chromeos