[extension SW] Support lazy events from extension service workers.

extensions/renderer/script_context.h

Index: extensions/renderer/script_context.h
diff --git a/extensions/renderer/script_context.h b/extensions/renderer/script_context.h
index 63a17d06e1385d51b16b86b367d75bbb6b60e706..17b82e50c31a6bc6aeef6b2c81c5c4ca3345d9f3 100644
--- a/extensions/renderer/script_context.h
+++ b/extensions/renderer/script_context.h
@@ -149,11 +149,16 @@ class ScriptContext : public RequestSender::Source {
   //  - It might let us remove the about:blank resolving?
   const GURL& url() const { return url_; }
 
+  const GURL& service_worker_scope() const;
+
   // Sets the URL of this ScriptContext. Usually this will automatically be set
   // on construction, unless this isn't constructed with enough information to
   // determine the URL (e.g. frame was null).
   // TODO(kalman): Make this a constructor parameter (as an origin).
   void set_url(const GURL& url) { url_ = url; }
+  void set_service_worker_scope(const GURL& scope) {
+    service_worker_scope_ = scope;
+  }
 
   // Returns whether the API |api| or any part of the API could be available in
   // this context without taking into account the context's extension.
@@ -269,6 +274,8 @@ class ScriptContext : public RequestSender::Source {
 
   GURL url_;
 
+  GURL service_worker_scope_;
+
   std::unique_ptr<Runner> runner_;
 
   base::ThreadChecker thread_checker_;