Make ChromotingHost::ui_strings() immutable.

remoting/host/disconnect_window_linux.cc

Index: remoting/host/disconnect_window_linux.cc
diff --git a/remoting/host/disconnect_window_linux.cc b/remoting/host/disconnect_window_linux.cc
index ad2707d9f789da6cafbbd2149cf6882d70089583..764996adcac4469dbe7d018a43e846d1d411ed00 100644
--- a/remoting/host/disconnect_window_linux.cc
+++ b/remoting/host/disconnect_window_linux.cc
@@ -36,7 +36,7 @@ class DisconnectWindowLinux : public DisconnectWindow {
  private:
   CHROMEGTK_CALLBACK_1(DisconnectWindowLinux, void, OnResponse, int);
 
-  void CreateWindow(UiStrings* ui_strings);
+  void CreateWindow(const UiStrings& ui_strings);
 
   ChromotingHost* host_;
   GtkWidget* disconnect_window_;
@@ -53,14 +53,14 @@ DisconnectWindowLinux::DisconnectWindowLinux()
 DisconnectWindowLinux::~DisconnectWindowLinux() {
 }
 
-void DisconnectWindowLinux::CreateWindow(UiStrings* ui_strings) {
+void DisconnectWindowLinux::CreateWindow(const UiStrings& ui_strings) {
   if (disconnect_window_) return;
 
   disconnect_window_ = gtk_dialog_new_with_buttons(
-      ui_strings->product_name.c_str(),
+      ui_strings.product_name.c_str(),
       NULL,
       GTK_DIALOG_NO_SEPARATOR,
-      ui_strings->disconnect_button_text_plus_shortcut.c_str(), GTK_RESPONSE_OK,
+      ui_strings.disconnect_button_text_plus_shortcut.c_str(), GTK_RESPONSE_OK,
       NULL);
 
   GtkWindow* window = GTK_WINDOW(disconnect_window_);
@@ -98,7 +98,7 @@ void DisconnectWindowLinux::Show(ChromotingHost* host,
   host_ = host;
   CreateWindow(host->ui_strings());
   gtk_label_set_text(GTK_LABEL(message_),
-                     host->ui_strings()->disconnect_message.c_str());
+                     host->ui_strings().disconnect_message.c_str());
   gtk_window_present(GTK_WINDOW(disconnect_window_));
 }