Block tabs.executeScript() from executing until user grants permission

chrome/browser/extensions/script_executor.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_SCRIPT_EXECUTOR_H_
 #define CHROME_BROWSER_EXTENSIONS_SCRIPT_EXECUTOR_H_
 
 #include <string>
 
 #include "base/callback_forward.h"
 #include "base/observer_list.h"
 #include "chrome/browser/extensions/tab_helper.h"
 #include "extensions/common/user_script.h"
 
 class GURL;
+struct ExtensionMsg_ExecuteCode_Params;
 
 namespace base {
 class ListValue;
 }  // namespace base
 
 namespace content {
 class WebContents;
 }
 
 namespace extensions {
@@ skipping 68 matching lines @@
                      UserScript::RunLocation run_at,
                      WorldType world_type,
                      ProcessType process_type,
                      const GURL& webview_src,
                      const GURL& file_url,
                      bool user_gesture,
                      ResultType result_type,
                      const ExecuteScriptCallback& callback);
 
  private:
+  // Called upon a request being given to execute the script.
+  void ExecuteScriptHelper(scoped_ptr<ExtensionMsg_ExecuteCode_Params> params,
+                           const ExecuteScriptCallback& callback);
+
   // The next value to use for request_id in ExtensionMsg_ExecuteCode_Params.
   int next_request_id_;
 
   content::WebContents* web_contents_;
 
   ObserverList<TabHelper::ScriptExecutionObserver>* script_observers_;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_SCRIPT_EXECUTOR_H_