Store secondary display layout to the user's preferences

chrome/common/pref_names.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 "chrome/common/pref_names.h"
 
 #include "base/basictypes.h"
 
 namespace prefs {
 
@@ skipping 705 matching lines @@
 const char kUseSharedProxies[] = "settings.use_shared_proxies";
 
 // A string prefs for OAuth1 token.
 const char kOAuth1Token[] = "settings.account.oauth1_token";
 
 // A string prefs for OAuth1 secret.
 const char kOAuth1Secret[] = "settings.account.oauth1_secret";
 
 // A boolean pref that enables the (private) pepper GetID() call.
 const char kEnableCrosDRM[] = "settings.privacy.drm_enabled";
+
+// An enumeration that specifies the layout of the secondary display.
+//  0 - The secondary display is at the top of the primary display.
+//  1 - The secondary display is at the right of the primary display.
+//  2 - The secondary display is at the bottom of the primary display.
+//  3 - The secondary display is at the left of the primary display.
+// TODO(mukai,oshima): update the format of the multi-display settings.
+const char kSecondaryDisplayLayout[] = "settings.display.secondary_layout";
 #endif  // defined(OS_CHROMEOS)
 
 // The disabled messages in IPC logging.
 const char kIpcDisabledMessages[] = "ipc_log_disabled_messages";
 
 // A boolean pref set to true if a Home button to open the Home pages should be
 // visible on the toolbar.
 const char kShowHomeButton[] = "browser.show_home_button";
 
 // A string value which saves short list of recently user selected encodings
@@ skipping 1259 matching lines @@
 const char kNetworkProfileLastWarningTime[] =
     "network_profile.last_warning_time";
 
 #if defined(OS_MACOSX)
 // A timestamp of when the obsolete OS infobar was last shown to a user on 10.5.
 const char kMacLeopardObsoleteInfobarLastShown[] =
     "mac_105_obsolete_infobar_last_shown";
 #endif  // defined(OS_MACOSX)
 
 }  // namespace prefs