Lock rotation when screen is manually rotated.

chrome/browser/chromeos/display/display_preferences.cc

Index: chrome/browser/chromeos/display/display_preferences.cc
diff --git a/chrome/browser/chromeos/display/display_preferences.cc b/chrome/browser/chromeos/display/display_preferences.cc
index 25a2356da281844bc83f32edb45890943f17cc67..42df268abef2dc2f6593af7ed5e61091023ca362 100644
--- a/chrome/browser/chromeos/display/display_preferences.cc
+++ b/chrome/browser/chromeos/display/display_preferences.cc
@@ -9,6 +9,7 @@
 #include "ash/display/display_pref_util.h"
 #include "ash/display/resolution_notification_controller.h"
 #include "ash/shell.h"
+#include "ash/wm/maximize_mode/maximize_mode_controller.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/prefs/scoped_user_pref_update.h"
@@ -309,6 +310,13 @@ void StoreDisplayPrefs() {
           DoesNotificationTimeout()) {
     return;
   }
+
+  ash::Shell* shell = ash::Shell::GetInstance();
+  if (shell->IsMaximizeModeWindowManagerEnabled() &&
+      shell->maximize_mode_controller()->accelerometer_setting_rotation()) {
+    return;
+  }

[oshima, 2014/05/22 17:14:29]

Can you define a predicate like

Shell::ShoudDisplaySettingsPresist
Shell::ShouldSaveDisplaySettings

and put the above logic together?

[jonross, 2014/05/23 19:07:20]

Done.

+
   StoreCurrentDisplayLayoutPrefs();
   StoreCurrentDisplayProperties();
 }