[Extensions Bindings] Add native declarativeContent verification

extensions/renderer/api_binding_hooks.h

 // Copyright 2016 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 EXTENSIONS_RENDERER_API_BINDING_HOOKS_H_
 #define EXTENSIONS_RENDERER_API_BINDING_HOOKS_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 52 matching lines @@
   // Gets the custom-set JS callback for the given method, if one exists.
   v8::Local<v8::Function> GetCustomJSCallback(const std::string& method_name,
                                               v8::Local<v8::Context> context);
 
   // Creates a new JS event for the given |event_name|, if a custom event is
   // provided. Returns true if an event was created.
   bool CreateCustomEvent(v8::Local<v8::Context> context,
                          const std::string& event_name,
                          v8::Local<v8::Value>* event_out);
 
+  // Performs any extra initialization on the template.
+  void InitializeTemplate(v8::Isolate* isolate,
+                          v8::Local<v8::ObjectTemplate> object_template,
+                          const APITypeReferenceMap& type_refs);
+
   void SetDelegate(std::unique_ptr<APIBindingHooksDelegate> delegate);
 
  private:
   // Updates the |arguments| by running |function| and settings arguments to the
   // returned result.
   bool UpdateArguments(v8::Local<v8::Function> function,
                        v8::Local<v8::Context> context,
                        std::vector<v8::Local<v8::Value>>* arguments);
 
   // The name of the associated API.
   std::string api_name_;
 
   // We use synchronous JS execution here because at every point we execute JS,
   // it's in direct response to JS calling in. There should be no reason that
   // script is disabled.
   binding::RunJSFunctionSync run_js_;
 
   std::unique_ptr<APIBindingHooksDelegate> delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(APIBindingHooks);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_API_BINDING_HOOKS_H_