In the declarative API, check that the extension has permission for the event

chrome/browser/extensions/api/declarative/declarative_api.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_API_DECLARATIVE_DECLARATIVE_API_H__
 #define CHROME_BROWSER_EXTENSIONS_API_DECLARATIVE_DECLARATIVE_API_H__
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/extensions/api/declarative/rules_registry.h"
 #include "chrome/browser/extensions/extension_function.h"
 
 namespace extensions {
 
 class RulesFunction : public AsyncExtensionFunction {
  public:
   RulesFunction();
 
  protected:
   virtual ~RulesFunction();
 
   // ExtensionFunction:
+  virtual bool HasPermission() OVERRIDE;
   virtual bool RunImpl() OVERRIDE;
 
   // Concrete implementation of the RulesFunction that is being called
   // on the thread on which the respective RulesRegistry lives.
   // Returns false in case of errors.
   virtual bool RunImplOnCorrectThread() = 0;
 
   scoped_refptr<RulesRegistry> rules_registry_;
 };
 
@@ skipping 26 matching lines @@
  protected:
   virtual ~GetRulesFunction() {}
 
   // RulesFunction:
   virtual bool RunImplOnCorrectThread() OVERRIDE;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_DECLARATIVE_DECLARATIVE_API_H__