Allow features to refer to subkeys in _manifest_features.json.

chrome/common/extensions/extension_manifest_constants.cc

 // 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.
 
 #include "chrome/common/extensions/extension_manifest_constants.h"
 
 namespace extension_manifest_keys {
 
 const char kAllFrames[] = "all_frames";
 const char kAltKey[] = "altKey";
@@ skipping 161 matching lines @@
     "Attempted uninstallation of an extension that is not user-manageable.";
 const char kChromeVersionTooLow[] =
     "This extension requires * version * or greater.";
 const char kDisabledByPolicy[] =
     "This extension has been disabled by your administrator.";
 const char kExpectString[] = "Expect string value.";
 const char kExperimentalFlagRequired[] =
     "Loading extensions with 'experimental' permission is turned off by "
     "default. You can enable 'Experimental Extension APIs' "
     "by visiting chrome://flags.";
-const char kFeatureNotAllowed[] =
-    "Feature '*' is not accessible. *";
 const char kInvalidAllFrames[] =
     "Invalid value for 'content_scripts[*].all_frames'.";
 const char kInvalidBackground[] =
     "Invalid value for 'background_page'.";
 const char kInvalidBackgroundAllowJsAccess[] =
     "Invalid value for 'background.allow_js_access'.";
 const char kInvalidBackgroundCombination[] =
     "The background.page and background.scripts properties cannot be used at "
     "the same time.";
 const char kInvalidBackgroundScript[] =
@@ skipping 277 matching lines @@
     "Loading platform_app extension type is turned off by default. "
     "You can enable this type with the --enable-platform-apps "
     "command-line flag.";
 const char kReservedMessageFound[] =
     "Reserved key * found in message catalog.";
 #if defined(OS_CHROMEOS)
 const char kIllegalPlugins[] =
     "Extensions cannot install plugins on Chrome OS";
 #endif
 }  // namespace extension_manifest_errors