Make the test server's SlowServerHandler match the documentation.

net/tools/testserver/testserver.py

 #!/usr/bin/env python
 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """This is a simple HTTP/FTP/TCP/UDP/BASIC_AUTH_PROXY/WEBSOCKET server used for
 testing Chrome.
 
 It supports several test URLs, as specified by the handlers in TestPageHandler.
 By default, it listens on an ephemeral port and sends the port number back to
@@ skipping 1307 matching lines @@
   def SlowServerHandler(self):
     """Wait for the user suggested time before responding. The syntax is
     /slow?0.5 to wait for half a second."""
 
     if not self._ShouldHandleRequest("/slow"):
       return False
     query_char = self.path.find('?')
     wait_sec = 1.0
     if query_char >= 0:
       try:
-        wait_sec = int(self.path[query_char + 1:])
+        wait_sec = float(self.path[query_char + 1:])
       except ValueError:
         pass
     time.sleep(wait_sec)
     self.send_response(200)
     self.send_header('Content-Type', 'text/plain')
     self.end_headers()
-    self.wfile.write("waited %d seconds" % wait_sec)
+    self.wfile.write("waited %.1f seconds" % wait_sec)
     return True
 
   def ChunkedServerHandler(self):
     """Send chunked response. Allows to specify chunks parameters:
      - waitBeforeHeaders - ms to wait before sending headers
      - waitBetweenChunks - ms to wait between chunks
      - chunkSize - size of each chunk in bytes
      - chunksNumber - number of chunks
     Example: /chunked?waitBeforeHeaders=1000&chunkSize=5&chunksNumber=5
     waits one second, then sends headers and five chunks five bytes each."""
@@ skipping 938 matching lines @@
                                   'OCSP response.')
     self.option_parser.add_option('--alert-after-handshake',
                                   dest='alert_after_handshake',
                                   default=False, action='store_true',
                                   help='If set, the server will send a fatal '
                                   'alert immediately after the handshake.')
 
 
 if __name__ == '__main__':
   sys.exit(ServerRunner().main())