Roll out http://trac.webkit.org/r193984, because the new test is timing out.

Roll out trac.webkit.org/r193984, because the new test is timing out.

Was: Strip out Referer header when requesting subresources or following links for documents with "Content-Disposition: attachment"
https://bugs.webkit.org/show_bug.cgi?id=152102
<rdar://problem/22124230>

Source/WebCore:

* dom/Document.cpp:
(WebCore::Document::processReferrerPolicy):
(WebCore::Document::applyContentDispositionAttachmentSandbox):

LayoutTests:

* http/tests/contentdispositionattachmentsandbox/resources/echo-http-referer.php: Removed.
* http/tests/contentdispositionattachmentsandbox/resources/subresource-request-not-include-referer-header-frame.php: Removed.
* http/tests/contentdispositionattachmentsandbox/subresource-request-not-include-referer-header-expected.txt: Removed.
* http/tests/contentdispositionattachmentsandbox/subresource-request-not-include-referer-header.html: Removed.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@193995 268f45cc-cd09-0410-ab3c-d52691b4dbfc