Remove create(ResponseType) and add setResponseType() methods in XMLHttpRequest

This is because not all browsers allow you to set the response type before calling open().
Also adds getResponseType().

Contributed by tbroyer
Fixes issue 7386
Review at https://gwt-code-reviews.appspot.com/1830803/

Review by: cromwellian@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@11267 8db76d5a-ed1c-0410-87a9-c151d255dfc7
1 file changed