Block content scripts from executing until user grants permission

chrome/browser/extensions/active_script_controller.h

Index: chrome/browser/extensions/active_script_controller.h
diff --git a/chrome/browser/extensions/active_script_controller.h b/chrome/browser/extensions/active_script_controller.h
index e2c7d9d1b507b278233eace924cf3cc0a6b804cd..3a3398cb1af3aa9008488c69001b1c993844b55d 100644
--- a/chrome/browser/extensions/active_script_controller.h
+++ b/chrome/browser/extensions/active_script_controller.h
@@ -88,9 +88,13 @@ class ActiveScriptController : public LocationBarController::ActionProvider,
   // Runs any pending injections for the corresponding extension.
   void RunPendingForExtension(const Extension* extension);
 
-  // Handles the NotifyExtensionScriptExecution message.
-  void OnNotifyExtensionScriptExecution(const std::string& extension_id,
-                                        int page_id);
+  // Handle the RequestContentScriptPermission message.
+  void OnRequestContentScriptPermission(const std::string& extension_id,
+                                        int page_id,
+                                        int request_id);
+
+  // Grants permission for the given request to run.
+  void GrantContentScriptPermission(int request_id);
 
   // content::WebContentsObserver implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;