Introduce ActiveScriptController; track active extension scripts

extensions/common/switches.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/switches.h"
 
 namespace extensions {
 
 namespace switches {
 
+// Notify the user and require consent for extensions running scripts.
+const char kActiveScriptEnforcement[] = "active-script-enforcement";
+
 // Allows non-https URL for background_page for hosted apps.
 const char kAllowHTTPBackgroundPage[] = "allow-http-background-page";
 
 // Allows the browser to load extensions that lack a modern manifest when that
 // would otherwise be forbidden.
 const char kAllowLegacyExtensionManifests[] =
     "allow-legacy-extension-manifests";
 
 // Enables extension APIs that are in development.
 const char kEnableExperimentalExtensionApis[] =
@@ skipping 31 matching lines @@
 // Makes component extensions appear in chrome://settings/extensions.
 const char kShowComponentExtensionOptions[] =
     "show-component-extension-options";
 
 // Adds the given extension ID to all the permission whitelists.
 const char kWhitelistedExtensionID[] = "whitelisted-extension-id";
 
 }  // namespace switches
 
 }  // namespace extensions