Store rotation/ui scale to local state.

chrome/browser/chromeos/display/display_preferences_unittest.cc

Index: chrome/browser/chromeos/display/display_preferences_unittest.cc
diff --git a/chrome/browser/chromeos/display/display_preferences_unittest.cc b/chrome/browser/chromeos/display/display_preferences_unittest.cc
index 03f0959d1893555707fa8d694970363ef1958230..731cc1e01e14dbb3ac82b09a8fe839b5164a8048 100644
--- a/chrome/browser/chromeos/display/display_preferences_unittest.cc
+++ b/chrome/browser/chromeos/display/display_preferences_unittest.cc
@@ -155,6 +155,8 @@ TEST_F(DisplayPreferencesTest, OldInitialization) {
   StoreDisplayOverscan(id2, gfx::Insets(20, 20, 20, 20));
 
   LoadDisplayPreferences();
+  ash::Shell::GetInstance()->display_manager()->UpdateDisplays();
+
   // Check if the layout settings are notified to the system properly.
   ash::DisplayController* display_controller =
       ash::Shell::GetInstance()->display_controller();
@@ -185,6 +187,7 @@ TEST_F(DisplayPreferencesTest, PairedLayoutOverrides) {
   StoreDefaultLayoutPref(ash::DisplayLayout::LEFT, 50);
 
   LoadDisplayPreferences();
+  ash::Shell::GetInstance()->display_manager()->UpdateDisplays();
   // Check if the layout settings are notified to the system properly.
   // The paired layout overrides old layout.
   ash::DisplayController* display_controller =