[Extensions Bindings] Add ExtensionBindingsSystem interface; hook it up

extensions/renderer/service_worker_data.h

Index: extensions/renderer/service_worker_data.h
diff --git a/extensions/renderer/service_worker_data.h b/extensions/renderer/service_worker_data.h
index 701a76133190b826eabed8c80325d521d516869a..8b356d18fd641ed6e0b077c555ae6c22fc56d090 100644
--- a/extensions/renderer/service_worker_data.h
+++ b/extensions/renderer/service_worker_data.h
@@ -12,19 +12,19 @@
 #include "extensions/renderer/v8_schema_registry.h"
 
 namespace extensions {
-class WorkerThreadDispatcher;
+class ExtensionBindingsSystem;
 
 // Per ServiceWorker data in worker thread.
 // Contains: RequestSender, V8SchemaRegistry.
 // TODO(lazyboy): Also put worker ScriptContexts in this.
 class ServiceWorkerData {
  public:
-  ServiceWorkerData(WorkerThreadDispatcher* dispatcher,
-                    int64_t service_worker_version_id);
+  ServiceWorkerData(int64_t service_worker_version_id,
+                    std::unique_ptr<ExtensionBindingsSystem> bindings_system);
   ~ServiceWorkerData();
 
   V8SchemaRegistry* v8_schema_registry() { return v8_schema_registry_.get(); }
-  ServiceWorkerRequestSender* request_sender() { return request_sender_.get(); }
+  ExtensionBindingsSystem* bindings_system() { return bindings_system_.get(); }
   int64_t service_worker_version_id() const {
     return service_worker_version_id_;
   }
@@ -33,7 +33,7 @@ class ServiceWorkerData {
   const int64_t service_worker_version_id_;
 
   std::unique_ptr<V8SchemaRegistry> v8_schema_registry_;
-  std::unique_ptr<ServiceWorkerRequestSender> request_sender_;
+  std::unique_ptr<ExtensionBindingsSystem> bindings_system_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerData);
 };