[Extensions Bindings] Add a bindings/ subdirectory under renderer

extensions/renderer/declarative_event.h

-// Copyright 2017 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_DECLARATIVE_EVENT_H_
-#define EXTENSIONS_RENDERER_DECLARATIVE_EVENT_H_
-
-#include <vector>
-
-#include "gin/wrappable.h"
-#include "v8/include/v8.h"
-
-namespace gin {
-class Arguments;
-}
-
-namespace extensions {
-class APIRequestHandler;
-class APITypeReferenceMap;
-
-// A gin::Wrappable object for declarative events (i.e., events that support
-// "rules"). Unlike regular events, these do not have associated listeners, and
-// extensions register an action to perform when the event happens.
-class DeclarativeEvent final : public gin::Wrappable<DeclarativeEvent> {
- public:
-  DeclarativeEvent(const std::string& name,
-                   APITypeReferenceMap* type_refs,
-                   APIRequestHandler* request_handler,
-                   const std::vector<std::string>& actions_list,
-                   const std::vector<std::string>& conditions_list,
-                   int webview_instance_id);
-  ~DeclarativeEvent() override;
-
-  static gin::WrapperInfo kWrapperInfo;
-
-  // gin::Wrappable:
-  gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
-      v8::Isolate* isolate) final;
-
- private:
-  // Bound methods for the JS object.
-  void AddRules(gin::Arguments* arguments);
-  void RemoveRules(gin::Arguments* arguments);
-  void GetRules(gin::Arguments* arguments);
-
-  void HandleFunction(const std::string& signature_name,
-                      const std::string& request_name,
-                      gin::Arguments* arguments);
-
-  std::string event_name_;
-
-  APITypeReferenceMap* type_refs_;
-
-  APIRequestHandler* request_handler_;
-
-  const int webview_instance_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(DeclarativeEvent);
-};
-
-}  // namespace extensions
-
-#endif  // EXTENSIONS_RENDERER_DECLARATIVE_EVENT_H_