Add support for command line switches to Features, and as proof that it works,

extensions/common/manifest_constants.cc

 // Copyright 2013 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 "extensions/common/manifest_constants.h"
 
 namespace extensions {
 
 namespace manifest_keys {
 
@@ skipping 253 matching lines @@
     "Cannot claim all URLs in an extent.";
 const char kCannotScriptGallery[] =
     "The extensions gallery cannot be scripted.";
 const char kCannotScriptSigninPage[] =
     "The sign-in page cannot be scripted.";
 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 kInvalidAboutPage[] = "Invalid value for 'about_page'.";
 const char kInvalidAboutPageExpectRelativePath[] =
     "Invalid value for 'about_page'. Value must be a relative path.";
 const char kInvalidAllFrames[] =
     "Invalid value for 'content_scripts[*].all_frames'.";
 const char kInvalidAppIconColor[] = "Invalid value for app.icon_color.";
 const char kInvalidBackground[] =
     "Invalid value for 'background_page'.";
 const char kInvalidBackgroundAllowJsAccess[] =
     "Invalid value for 'background.allow_js_access'.";
@@ skipping 416 matching lines @@
 const char kWebRequestConflictsWithLazyBackground[] =
     "The 'webRequest' API cannot be used with event pages.";
 #if defined(OS_CHROMEOS)
 const char kIllegalPlugins[] =
     "Extensions cannot install plugins on Chrome OS";
 #endif
 
 }  // namespace manifest_errors
 
 }  // namespace extensions