hg: jdk/sandbox: http-client-branch: add offline testing example

[chris.hegarty at oracle.com]

Changeset: fa36a61f4cbf
Author:    chegar
Date:      2018-01-18 11:26 +0000
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/fa36a61f4cbf

http-client-branch: add offline testing example

+ test/jdk/java/net/httpclient/offline/DelegatingHttpClient.java
+ test/jdk/java/net/httpclient/offline/FixedHttpHeaders.java
+ test/jdk/java/net/httpclient/offline/FixedHttpResponse.java
+ test/jdk/java/net/httpclient/offline/FixedResponseHttpClient.java
+ test/jdk/java/net/httpclient/offline/OfflineTesting.java