[DevTools] Send ServiceWorkerVersion.ScriptLastModified and ScriptResponseTime to DevTools window.

content/browser/service_worker/service_worker_version.h

Index: content/browser/service_worker/service_worker_version.h
diff --git a/content/browser/service_worker/service_worker_version.h b/content/browser/service_worker/service_worker_version.h
index 5a028f581c6437be2e30e5a6adfe4f321244959b..047845c71a1f8f42cc9a534b0b1882b48351a5ad 100644
--- a/content/browser/service_worker/service_worker_version.h
+++ b/content/browser/service_worker/service_worker_version.h
@@ -95,6 +95,7 @@ class CONTENT_EXPORT ServiceWorkerVersion
    public:
     virtual void OnRunningStateChanged(ServiceWorkerVersion* version) {}
     virtual void OnVersionStateChanged(ServiceWorkerVersion* version) {}
+    virtual void OnVersionUpdateTimeSet(ServiceWorkerVersion* version) {}
     virtual void OnErrorReported(ServiceWorkerVersion* version,
                                  const base::string16& error_message,
                                  int line_number,
@@ -297,6 +298,9 @@ class CONTENT_EXPORT ServiceWorkerVersion
   void SetMainScriptHttpResponseInfo(const net::HttpResponseInfo& http_info);
   const net::HttpResponseInfo* GetMainScriptHttpResponseInfo();
 
+  base::Time update_time() const { return update_time_; }
+  void set_update_time(base::Time update_time);
+
  private:
   friend class base::RefCounted<ServiceWorkerVersion>;
   friend class ServiceWorkerURLRequestJobTest;
@@ -464,6 +468,7 @@ class CONTENT_EXPORT ServiceWorkerVersion
   GURL script_url_;
   GURL scope_;
   Status status_;
+  base::Time update_time_;
   scoped_ptr<EmbeddedWorkerInstance> embedded_worker_;
   std::vector<StatusCallback> start_callbacks_;
   std::vector<StatusCallback> stop_callbacks_;