Store secondary display layout to the user's preferences

chrome/common/pref_names.cc

Index: chrome/common/pref_names.cc
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index a44dcb475944ab63e6f5625ec2d3fd380434bd09..76e3ea4e22ff828a189e8394c9844d5bb03405e8 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -723,6 +723,14 @@ 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 enum that specifies the layout of the secondary display.

[James Hawkins, 2012/07/26 17:41:54]

nit: I'd call this an enumeration to distinguish it from the enum keyword.

[Jun Mukai, 2012/07/27 04:22:14]

Done.

+//  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.