wptserve: Import the latest revision of wptserve-related files.

third_party/WebKit/Tools/Scripts/webkitpy/thirdparty/wpt/wpt/tools/wptserve/wptserve/request.py

Index: third_party/WebKit/Tools/Scripts/webkitpy/thirdparty/wpt/wpt/tools/wptserve/wptserve/request.py
diff --git a/third_party/WebKit/Tools/Scripts/webkitpy/thirdparty/wpt/wpt/tools/wptserve/wptserve/request.py b/third_party/WebKit/Tools/Scripts/webkitpy/thirdparty/wpt/wpt/tools/wptserve/wptserve/request.py
index 0d4b4196cba36b5b111cabc88ef8eaea4fcef37a..6b8a7cef86ef2b4f156dc239e61b6375f26b8026 100644
--- a/third_party/WebKit/Tools/Scripts/webkitpy/thirdparty/wpt/wpt/tools/wptserve/wptserve/request.py
+++ b/third_party/WebKit/Tools/Scripts/webkitpy/thirdparty/wpt/wpt/tools/wptserve/wptserve/request.py
@@ -1,13 +1,12 @@
 import base64
 import cgi
 import Cookie
-import os
 import StringIO
 import tempfile
 import urlparse
 
-import stash
-from utils import HTTPException
+from . import stash
+from .utils import HTTPException
 
 missing = object()
 
@@ -179,6 +178,10 @@ class Request(object):
 
     Request path as it appears in the HTTP request.
 
+    .. attribute:: url_base
+
+    The prefix part of the path; typically / unless the handler has a url_base set
+
     .. attribute:: url
 
     Absolute URL for the request.
@@ -253,6 +256,7 @@ class Request(object):
                 host, port = host.split(":", 1)
 
         self.request_path = request_handler.path
+        self.url_base = "/"
 
         if self.request_path.startswith(scheme + "://"):
             self.url = request_handler.path