Refactoring: de-couple Extensions from "script injection System" [render side]:4

extensions/renderer/user_script_set_manager.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_USER_SCRIPT_SET_MANAGER_H_
 #define EXTENSIONS_RENDERER_USER_SCRIPT_SET_MANAGER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 16 matching lines @@
 
 namespace extensions {
 
 class ExtensionSet;
 class ScriptInjection;
 
 // Manager for separate UserScriptSets, one for each shared memory region.
 // Regions are organized as follows:
 // static_scripts -- contains all extensions' scripts that are statically
 //                   declared in the extension manifest.
-// programmatic_scripts -- one region per extension containing only
-//                         programmatically-declared scripts, instantiated
+// programmatic_scripts -- one region per host (extension or WebUI) containing
+//                         only programmatically-declared scripts, instantiated
 //                         when an extension first creates a declarative rule
 //                         that would, if triggered, request a script injection.
 class UserScriptSetManager : public content::RenderProcessObserver {
  public:
   // Like a UserScriptSet::Observer, but automatically subscribes to all sets
   // associated with the manager.
   class Observer {
    public:
     virtual void OnUserScriptsUpdated(
-        const std::set<std::string>& changed_extensions,
+        const std::set<HostID>& changed_hosts,
         const std::vector<UserScript*>& scripts) = 0;
   };
 
   UserScriptSetManager(const ExtensionSet* extensions);
 
   ~UserScriptSetManager() override;
 
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
@@ skipping 15 matching lines @@
                         UserScript::RunLocation run_location);
 
   // Get active extension IDs from |static_scripts| and each of
   // |programmatic_scripts_|.
   void GetAllActiveExtensionIds(std::set<std::string>* ids) const;
 
   const UserScriptSet* static_scripts() const { return &static_scripts_; }
 
  private:
   // Map for per-extension sets that may be defined programmatically.
-  typedef std::map<ExtensionId, linked_ptr<UserScriptSet> > UserScriptSetMap;
+  typedef std::map<HostID, linked_ptr<UserScriptSet> > UserScriptSetMap;
 
   // content::RenderProcessObserver implementation.
   bool OnControlMessageReceived(const IPC::Message& message) override;
 
-  UserScriptSet* GetProgrammaticScriptsByExtension(
-      const ExtensionId& extensionId);
+  UserScriptSet* GetProgrammaticScriptsByHostID(const HostID& host_id);
 
   // Handle the UpdateUserScripts extension message.
   void OnUpdateUserScripts(base::SharedMemoryHandle shared_memory,
-                           const ExtensionId& extension_id,
-                           const std::set<std::string>& changed_extensions);
+                           const HostID& host_id,
+                           const std::set<HostID>& changed_hosts);
 
   // Scripts statically defined in extension manifests.
   UserScriptSet static_scripts_;
 
   // Scripts programmatically-defined through API calls (initialized and stored
   // per-extension).
   UserScriptSetMap programmatic_scripts_;
 
   // The set of all known extensions. Owned by the Dispatcher.
   const ExtensionSet* extensions_;
 
   // The associated observers.
   ObserverList<Observer> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(UserScriptSetManager);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_USER_SCRIPT_SET_MANAGER_H_