[extension SW]: Support event listener registration and event dispatching.

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 e9bbabb1d252da4fa56e8a060e2b113ed52b72b9..ec415bf2465f292ff8eb1deb925dbe790f059ef8 100644
--- a/extensions/renderer/service_worker_data.h
+++ b/extensions/renderer/service_worker_data.h
@@ -20,6 +20,7 @@ class ExtensionBindingsSystem;
 class ServiceWorkerData {
  public:
   ServiceWorkerData(int64_t service_worker_version_id,
+                    ScriptContext* context,
                     std::unique_ptr<ExtensionBindingsSystem> bindings_system);
   ~ServiceWorkerData();
 
@@ -28,9 +29,11 @@ class ServiceWorkerData {
   int64_t service_worker_version_id() const {
     return service_worker_version_id_;
   }
+  ScriptContext* context() const { return context_; }
 
  private:
   const int64_t service_worker_version_id_;
+  ScriptContext* const context_;
 
   std::unique_ptr<V8SchemaRegistry> v8_schema_registry_;
   std::unique_ptr<ExtensionBindingsSystem> bindings_system_;