[Extensions Bindings] Add ExtensionBindingsSystem interface; hook it up

extensions/renderer/dispatcher.h

 // Copyright 2014 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_DISPATCHER_H_
 #define EXTENSIONS_RENDERER_DISPATCHER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 44 matching lines @@
 }
 
 namespace content {
 class RenderThread;
 }
 
 namespace extensions {
 class ContentWatcher;
 class DispatcherDelegate;
 class FilteredEventRouter;
+class JsExtensionBindingsSystem;
 class ManifestPermissionSet;
 class RequestSender;
 class ScriptContext;
 class ScriptInjectionManager;
 struct Message;
 
 // Dispatches extension control messages sent to the renderer and stores
 // renderer extension related state.
 class Dispatcher : public content::RenderThreadObserver,
                    public UserScriptSetManager::Observer {
  public:
   explicit Dispatcher(DispatcherDelegate* delegate);
   ~Dispatcher() override;
 
   const ScriptContextSet& script_context_set() const {
     return *script_context_set_;
   }
 
   V8SchemaRegistry* v8_schema_registry() { return v8_schema_registry_.get(); }
 
   ContentWatcher* content_watcher() { return content_watcher_.get(); }
 
-  RequestSender* request_sender() { return request_sender_.get(); }
-
   const std::string& webview_partition_id() { return webview_partition_id_; }
 
   bool activity_logging_enabled() const { return activity_logging_enabled_; }
 
   void OnRenderFrameCreated(content::RenderFrame* render_frame);
 
   bool IsExtensionActive(const std::string& extension_id) const;
 
   void DidCreateScriptContext(blink::WebLocalFrame* frame,
                               const v8::Local<v8::Context>& context,
@@ skipping 123 matching lines @@
 
   // Enable custom element whitelist in Apps.
   void EnableCustomElementWhiteList();
 
   // Adds or removes bindings for every context belonging to |extension_id|, or
   // or all contexts if |extension_id| is empty.
   void UpdateBindings(const std::string& extension_id);
 
   void UpdateBindingsForContext(ScriptContext* context);
 
-  void RegisterBinding(const std::string& api_name, ScriptContext* context);
-
   void RegisterNativeHandlers(ModuleSystem* module_system,
                               ScriptContext* context,
                               RequestSender* request_sender,
                               V8SchemaRegistry* v8_schema_registry);
 
-  // Determines if a ScriptContext can connect to any externally_connectable-
-  // enabled extension.
-  bool IsRuntimeAvailableToContext(ScriptContext* context);
-
   // Updates a web page context with any content capabilities granted by active
   // extensions.
   void UpdateContentCapabilities(ScriptContext* context);
 
   // Inserts static source code into |source_map_|.
   void PopulateSourceMap();
 
   // Returns whether the current renderer hosts a platform app.
   bool IsWithinPlatformApp();
 
-  // Gets |field| from |object| or creates it as an empty object if it doesn't
-  // exist.
-  static v8::Local<v8::Object> GetOrCreateObject(
-      const v8::Local<v8::Object>& object,
-      const std::string& field,
-      v8::Isolate* isolate);
-
-  static v8::Local<v8::Object> GetOrCreateBindObjectIfAvailable(
-      const std::string& api_name,
-      std::string* bind_name,
-      ScriptContext* context);
-
   // Requires the GuestView modules in the module system of the ScriptContext
   // |context|.
   void RequireGuestViewModules(ScriptContext* context);
 
   // The delegate for this dispatcher. Not owned, but must extend beyond the
   // Dispatcher's own lifetime.
   DispatcherDelegate* delegate_;
 
   // True if the IdleNotification timer should be set.
   bool set_idle_notifications_;
@@ skipping 17 matching lines @@
   std::unique_ptr<base::RepeatingTimer> forced_idle_timer_;
 
   // The extensions and apps that are active in this process.
   ExtensionIdSet active_extension_ids_;
 
   ResourceBundleSourceMap source_map_;
 
   // Cache for the v8 representation of extension API schemas.
   std::unique_ptr<V8SchemaRegistry> v8_schema_registry_;
 
-  // Sends API requests to the extension host.
-  std::unique_ptr<RequestSender> request_sender_;
+  // The bindings system associated with the main thread.
+  std::unique_ptr<JsExtensionBindingsSystem> bindings_system_;
 
   // The platforms system font family and size;
   std::string system_font_family_;
   std::string system_font_size_;
 
   // It is important for this to come after the ScriptInjectionManager, so that
   // the observer is destroyed before the UserScriptSet.
   ScopedObserver<UserScriptSetManager, UserScriptSetManager::Observer>
       user_script_set_manager_observer_;
 
   // Whether or not extension activity is enabled.
   bool activity_logging_enabled_;
 
   // The WebView partition ID associated with this process's storage partition,
   // if this renderer is a WebView guest render process. Otherwise, this will be
   // empty.
   std::string webview_partition_id_;
 
   DISALLOW_COPY_AND_ASSIGN(Dispatcher);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_DISPATCHER_H_