Introduce ActiveScriptController; track active extension scripts

chrome/browser/extensions/tab_helper.h

 // Copyright (c) 2012 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 CHROME_BROWSER_EXTENSIONS_TAB_HELPER_H_
 #define CHROME_BROWSER_EXTENSIONS_TAB_HELPER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 184 matching lines @@
                                const GURL& requestor_url,
                                int listeners_mask);
   void OnGetAppInstallState(const GURL& requestor_url,
                             int return_route_id,
                             int callback_id);
   void OnRequest(const ExtensionHostMsg_Request_Params& params);
   void OnContentScriptsExecuting(
       const ScriptExecutionObserver::ExecutingScriptsMap& extension_ids,
       int32 page_id,
       const GURL& on_url);
+  void OnNotifyExtensionScriptExecution(const std::string& extension_id);
   void OnWatchedPageChange(const std::vector<std::string>& css_selectors);
   void OnDetailedConsoleMessageAdded(const base::string16& message,
                                      const base::string16& source,
                                      const StackTrace& stack_trace,
                                      int32 severity_level);
 
   // App extensions related methods:
 
   // Resets app_icon_ and if |extension| is non-null uses ImageLoader to load
   // the extension's image asynchronously.
@@ skipping 63 matching lines @@
 
   // Creates WebstoreInlineInstaller instances for inline install triggers.
   scoped_ptr<WebstoreInlineInstallerFactory> webstore_inline_installer_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TabHelper);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_TAB_HELPER_H_