Support "always allow" for runtime script execution

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 21e068dcf04945e257ab0bd013ac2c22ca0606fc..895c8c4a27a21049ffe22bc0d384adb51454e15e 100644
--- a/chrome/browser/extensions/active_script_controller.h
+++ b/chrome/browser/extensions/active_script_controller.h
@@ -54,6 +54,13 @@ class ActiveScriptController : public LocationBarController::ActionProvider,
   // Notifies the ActiveScriptController of detected ad injection.
   void OnAdInjectionDetected(const std::set<std::string>& ad_injectors);
 
+  // Adds the visible host to |extension|'s active permissions, granting
+  // |extension| permission to always run script injections on the host.
+  void AlwaysRunOnVisibleHost(const Extension* extension);
+
+  // Returns true if there is an active script injection action for |extension|.
+  bool HasActiveScriptAction(const Extension* extension);
+
   // LocationBarControllerProvider implementation.
   virtual ExtensionAction* GetActionForExtension(
       const Extension* extension) OVERRIDE;