hg: jdk9/sandbox/jdk: http-client-branch: implement HttpResponseImpl::getRawChannel

[daniel.fuchs at oracle.com]

Changeset: 354a67b12d0a
Author:    dfuchs
Date:      2016-08-17 17:34 +0100
URL:       http://hg.openjdk.java.net/jdk9/sandbox/jdk/rev/354a67b12d0a

http-client-branch: implement HttpResponseImpl::getRawChannel

! src/java.httpclient/share/classes/java/net/http/ExchangeImpl.java
! src/java.httpclient/share/classes/java/net/http/HttpResponseImpl.java
! src/java.httpclient/share/classes/java/net/http/Stream.java