Expand usage of platform-apps flag and permission features.

chrome/common/extensions/extension_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 CHROME_COMMON_EXTENSIONS_EXTENSION_CONSTANTS_H_
 #define CHROME_COMMON_EXTENSIONS_EXTENSION_CONSTANTS_H_
 #pragma once
 
 #include <string>
 
@@ skipping 279 matching lines @@
   extern const char kLocalesNoDefaultLocaleSpecified[];
   extern const char kLocalesNoDefaultMessages[];
   extern const char kLocalesNoValidLocaleNamesListed[];
   extern const char kLocalesTreeMissing[];
   extern const char kManifestParseError[];
   extern const char kManifestUnreadable[];
   extern const char kMissingFile[];
   extern const char kMultipleOverrides[];
   extern const char kNoWildCardsInPaths[];
   extern const char kPermissionNotAllowed[];
+  extern const char kPlatformAppFlagRequired[];
   extern const char kOneUISurfaceOnly[];
   extern const char kReservedMessageFound[];
   extern const char kWebContentMustBeEnabled[];
 #if defined(OS_CHROMEOS)
   extern const char kIllegalPlugins[];
 #endif
 }  // namespace extension_manifest_errors
 
 namespace extension_urls {
   // Returns the URL prefix for the extension/apps gallery. Can be set via the
@@ skipping 200 matching lines @@
 
   enum UnloadedExtensionReason {
     UNLOAD_REASON_DISABLE,    // Extension is being disabled.
     UNLOAD_REASON_UPDATE,     // Extension is being updated to a newer version.
     UNLOAD_REASON_UNINSTALL,  // Extension is being uninstalled.
     UNLOAD_REASON_TERMINATE,  // Extension has terminated.
   };
 }  // extension_misc
 
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_CONSTANTS_H_