Remove dependency of chrome in WebRequestPermissions.

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_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 122 matching lines @@
 
 // The extension id of the Office Viewer extension.
 extern const char kQuickOfficeExtensionId[];
 
 // The extension id of the settings application.
 extern const char kSettingsAppId[];
 
 // The extension id used for testing streamsPrivate
 extern const char kStreamsPrivateTestExtensionId[];
 
-// The extension id of the Web Store component application.
-extern const char kWebStoreAppId[];
-
 // The extension id of the Youtube application.
 extern const char kYoutubeAppId[];
 
 // The extension id of the in-app payments support application.
 extern const char kInAppPaymentsSupportAppId[];
 
 // The name of the app launch histogram.
 extern const char kAppLaunchHistogram[];
 
 // The name of the app launch histogram for platform apps.
@@ skipping 172 matching lines @@
   LAUNCH_CONTAINER_PANEL,
   LAUNCH_CONTAINER_TAB,
   // For platform apps, which don't actually have a container (they just get a
   // "onLaunched" event).
   LAUNCH_CONTAINER_NONE
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_CONSTANTS_H_