Support "always allow" for runtime script execution

extensions/browser/extension_prefs.h

 // Copyright 2014 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 EXTENSIONS_BROWSER_EXTENSION_PREFS_H_
 #define EXTENSIONS_BROWSER_EXTENSION_PREFS_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 382 matching lines @@
 
   // Gets the active permission set for the specified extension. This may
   // differ from the permissions in the manifest due to the optional
   // permissions API. This passes ownership of the set to the caller.
   PermissionSet* GetActivePermissions(const std::string& extension_id);
 
   // Sets the active |permissions| for the extension with |extension_id|.
   void SetActivePermissions(const std::string& extension_id,
                             const PermissionSet* permissions);
 
+  bool GetPersistedPermissions(const std::string& extension_id,
+                               URLPatternSet* persisted_permissions);
+
+  void AddPersistedPermission(const Extension* extension,
+                              const URLPattern* pattern);
+
+  void ClearPersistedPermissions(const Extension* extension);
+
   // Records whether or not this extension is currently running.
   void SetExtensionRunning(const std::string& extension_id, bool is_running);
 
   // Returns whether or not this extension is marked as running. This is used to
   // restart apps across browser restarts.
   bool IsExtensionRunning(const std::string& extension_id);
 
   // Set/Get whether or not the app is active. Used to force a launch of apps
   // that don't handle onRestarted() on a restart. We can only safely do that if
   // the app was active when it was last running.
@@ skipping 299 matching lines @@
   bool extensions_disabled_;
 
   ObserverList<ExtensionPrefsObserver> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionPrefs);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_EXTENSION_PREFS_H_