[Extensions] Propagate activeTab hosts to extension background pages

extensions/renderer/dispatcher.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_RENDERER_DISPATCHER_H_
 #define EXTENSIONS_RENDERER_DISPATCHER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 171 matching lines @@
   void OnSetFunctionNames(const std::vector<std::string>& names);
   void OnSetScriptingWhitelist(
       const ExtensionsClient::ScriptingWhitelist& extension_ids);
   void OnSetSystemFont(const std::string& font_family,
                        const std::string& font_size);
   void OnShouldSuspend(const std::string& extension_id, uint64 sequence_id);
   void OnSuspend(const std::string& extension_id);
   void OnTransferBlobs(const std::vector<std::string>& blob_uuids);
   void OnUnloaded(const std::string& id);
   void OnUpdatePermissions(const ExtensionMsg_UpdatePermissions_Params& params);
+  void OnUpdateTabSpecificPermissions(const GURL& visible_url,
+                                      const std::string& extension_id,
+                                      const URLPatternSet& new_hosts,
+                                      int tab_id);
+  void OnClearTabSpecificPermissions(
+      const std::vector<std::string>& extension_ids,
+      int tab_id);
   void OnUsingWebRequestAPI(bool webrequest_used);
 
   // UserScriptSetManager::Observer implementation.
   void OnUserScriptsUpdated(const std::set<std::string>& changed_extensions,
                             const std::vector<UserScript*>& scripts) override;
 
   void UpdateActiveExtensions();
 
   // Sets up the host permissions for |extension|.
   void InitOriginPermissions(const Extension* extension);
 
-  // Updates the host permissions for extension to include only those in
-  // |new_patterns|, and remove from |old_patterns| that are no longer allowed.
+  // Updates the host permissions for extension to include only those currently
+  // in the extensions permissions, and removes any others in |old_patterns|.
   void UpdateOriginPermissions(const Extension* extension,
-                               const URLPatternSet& old_patterns,
-                               const URLPatternSet& new_patterns);
+                               const URLPatternSet& old_patterns);
 
   // Enable custom element whitelist in Apps.
   void EnableCustomElementWhiteList();
 
   // Adds or removes bindings for every context belonging to |extension_id|, or
   // or all contexts if |extension_id| is empty.
   void UpdateBindings(const std::string& extension_id);
 
   void UpdateBindingsForContext(ScriptContext* context);
 
@@ skipping 97 matching lines @@
 
   // Status of webrequest usage.
   bool webrequest_used_;
 
   DISALLOW_COPY_AND_ASSIGN(Dispatcher);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_DISPATCHER_H_