Reviewed by Darin Adler.

        - fix <rdar://problem/5825683> Three slash URLs are modified by WebKit

        Test: fast/loader/url-parse-1.html

        URIs in which the scheme is followed by "://" are ambiguous, because
        "//" can be either the beginning of a net_path or the beginning of an
        abs_path whose first path segment is empty. In the case of ":///", the
        net_path interpretation is invalid, because the authority (the part
        between the second and third slashes) cannot be empty. However, for
        historical reasons, this is allowed in http:, https: and file: URLs,
        in which an empty authority means the local host.

        * platform/KURL.cpp:
        (WebCore::KURL::parse): Changed to interpret URLs in which the scheme
        is followed by ":///" as abs_path-only URLs, unless the scheme is http,
        https or file.

LayoutTests:

        Reviewed by Darin Adler.

        - test for <rdar://problem/5825683> Three slash URLs are modified by WebKit

        * fast/loader/url-parse-1-expected.txt: Added.
        * fast/loader/url-parse-1.html: Added.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@34579 268f45cc-cd09-0410-ab3c-d52691b4dbfc