Move LaunchType out of ExtensionPrefs.

extensions/common/constants.h

 // 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 EXTENSIONS_COMMON_CONSTANTS_H_
 #define EXTENSIONS_COMMON_CONSTANTS_H_
 
 #include "base/files/file_path.h"
 
 namespace extensions {
@@ skipping 67 matching lines @@
 // The name of the database inside the profile where chrome-internal
 // extension state resides.
 extern const char kStateStoreName[];
 
 // The name of the database inside the profile where declarative extension
 // rules are stored.
 extern const char kRulesStoreName[];
 
 // Don't remove items or change the order of this enum.  It's used in
 // histograms and preferences.
+// TODO(derat): Move this to chrome/browser/extensions/launch_util.h?
 enum LaunchContainer {
   LAUNCH_WINDOW,
   LAUNCH_PANEL,
   LAUNCH_TAB,
   // For platform apps, which don't actually have a container (they just get a
   // "onLaunched" event).
   LAUNCH_NONE
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_CONSTANTS_H_