Remove single-window-metro-mode code paths for the app launcher and apps.

apps/app_restore_service.cc

Index: apps/app_restore_service.cc
diff --git a/apps/app_restore_service.cc b/apps/app_restore_service.cc
index e92fd2c302ce8ddc3279a635d12a58a76b01740d..b07726682b04d143508e129a49acf9b7f9653817 100644
--- a/apps/app_restore_service.cc
+++ b/apps/app_restore_service.cc
@@ -18,10 +18,6 @@
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_set.h"
 
-#if defined(OS_WIN)
-#include "win8/util/win8_util.h"
-#endif
-
 using extensions::Extension;
 using extensions::ExtensionHost;
 using extensions::ExtensionPrefs;
@@ -35,10 +31,6 @@ bool AppRestoreService::ShouldRestoreApps(bool is_browser_restart) {
 #if defined(OS_CHROMEOS)
   // Chromeos always restarts apps, even if it was a regular shutdown.
   should_restore_apps = true;
-#elif defined(OS_WIN)
-  // Packaged apps are not supported in Metro mode, so don't try to start them.
-  if (win8::IsSingleWindowMetroMode())
-    should_restore_apps = false;
 #endif
   return should_restore_apps;
 }