Save display preference on boot

ash/display/display_controller.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 "ash/display/display_controller.h"
 
 #include <algorithm>
 #include <cmath>
 #include <map>
 
 #include "ash/ash_switches.h"
 #include "ash/display/display_layout_store.h"
 #include "ash/display/display_manager.h"
 #include "ash/display/mirror_window_controller.h"
 #include "ash/display/root_window_transformers.h"
 #include "ash/display/virtual_keyboard_window_controller.h"
 #include "ash/host/root_window_host_factory.h"
 #include "ash/root_window_controller.h"
 #include "ash/root_window_settings.h"
 #include "ash/screen_ash.h"
 #include "ash/shell.h"
+#include "ash/shell_delegate.h"
 #include "ash/wm/coordinate_conversion.h"
 #include "base/command_line.h"
 #include "base/strings/stringprintf.h"
 #include "third_party/skia/include/utils/SkMatrix44.h"
 #include "ui/aura/client/activation_client.h"
 #include "ui/aura/client/capture_client.h"
 #include "ui/aura/client/cursor_client.h"
 #include "ui/aura/client/focus_client.h"
 #include "ui/aura/client/screen_position_client.h"
 #include "ui/aura/root_window.h"
@@ skipping 207 matching lines @@
   num_displays_for_shutdown = -1;
 }
 
 DisplayController::~DisplayController() {
   DCHECK(primary_display_for_shutdown);
 }
 
 void DisplayController::Start() {
   Shell::GetScreen()->AddObserver(this);
   Shell::GetInstance()->display_manager()->set_delegate(this);
+
+  if (Shell::GetInstance()->delegate()->IsFirstRunAfterBoot()) {
+    // Update the display pref with the initial power state.
+    FOR_EACH_OBSERVER(Observer, observers_, OnDisplayConfigurationChanging());
+    FOR_EACH_OBSERVER(Observer, observers_, OnDisplayConfigurationChanged());
+  }
 }
 
 void DisplayController::Shutdown() {
   // Unset the display manager's delegate here because
   // DisplayManager outlives DisplayController.
   Shell::GetInstance()->display_manager()->set_delegate(NULL);
 
   mirror_window_controller_.reset();
   virtual_keyboard_window_controller_.reset();
 
@@ skipping 556 matching lines @@
     std::string name =
         root_windows[i] == primary ? "aura_root_0" : "aura_root_x";
     gfx::AcceleratedWidget xwindow =
         root_windows[i]->GetDispatcher()->host()->GetAcceleratedWidget();
     XStoreName(gfx::GetXDisplay(), xwindow, name.c_str());
   }
 #endif
 }
 
 }  // namespace ash