Allow storing display preferences per device.

chrome/browser/chromeos/display_preferences.h

Index: chrome/browser/chromeos/display_preferences.h
diff --git a/chrome/browser/chromeos/display_preferences.h b/chrome/browser/chromeos/display_preferences.h
new file mode 100644
index 0000000000000000000000000000000000000000..5e7d8101148fac7aa2d87b4f6b44288c3e81e306
--- /dev/null
+++ b/chrome/browser/chromeos/display_preferences.h
@@ -0,0 +1,26 @@
+// 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_DISPLAY_PREFERENCES_H_
+#define CHROME_BROWSER_CHROMEOS_DISPLAY_PREFERENCES_H_
+
+class PrefService;
+namespace gfx {
+class Display;
+}
+
+namespace chromeos {
+
+void RegisterDisplayPrefs(PrefService* pref_service);
+
+void SetDisplayLayoutPref(PrefService* pref_service,
+                          const gfx::Display& display,
+                          int layout,
+                          int offset);
+
+void NotifyDisplayPrefChanged(PrefService* pref_service);

[oshima, 2012/08/29 00:10:44]

document these

[Jun Mukai, 2012/08/29 02:15:03]

Done.

+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_DISPLAY_PREFERENCES_H_