Moved apps metro code from apps to chrome/browser/apps.

apps/pref_names.cc

Index: apps/pref_names.cc
diff --git a/apps/pref_names.cc b/apps/pref_names.cc
index e44df75ce473d965aa5fdfb51f7728ce1209b8a6..ea08c76ba4ad271e4bd51491c4737c93cf49956e 100644
--- a/apps/pref_names.cc
+++ b/apps/pref_names.cc
@@ -12,15 +12,6 @@ namespace prefs {
 extern const char kAppFullscreenAllowed[] =
     "apps.fullscreen.allowed";
 
-// If set, the user requested to launch the app with this extension id while
-// in Metro mode, and then relaunched to Desktop mode to start it.
-const char kAppLaunchForMetroRestart[] = "apps.app_launch_for_metro_restart";
-
-// Set with |kAppLaunchForMetroRestart|, the profile whose loading triggers
-// launch of the specified app when restarting Chrome in desktop mode.
-const char kAppLaunchForMetroRestartProfile[] =
-    "apps.app_launch_for_metro_restart_profile";
-
 }  // namespace prefs
 
 }  // namespace apps