[ChromeOS] Expose keyboard remapping to signin screen.

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

Index: chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
diff --git a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
index cf023763f334e81d2a5efb3dcdeb3b0cd3ce2f4e..556ee603faabc9b4d547ee85b39a34646c0b92e4 100644
--- a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
+++ b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
@@ -676,6 +676,16 @@ 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() {