Removing flake in TemporaryHTTPServer.

tools/chrome_remote_control/chrome_remote_control/cros_interface.py

Index: tools/chrome_remote_control/chrome_remote_control/cros_interface.py
diff --git a/tools/chrome_remote_control/chrome_remote_control/cros_interface.py b/tools/chrome_remote_control/chrome_remote_control/cros_interface.py
index b03356f220cdd987869d65397d8ae0faea0087a1..4672f9fb33d98ccbe832cfb5c875a409d5c66c17 100644
--- a/tools/chrome_remote_control/chrome_remote_control/cros_interface.py
+++ b/tools/chrome_remote_control/chrome_remote_control/cros_interface.py
@@ -368,8 +368,15 @@ class CrOSInterface(object):
       logging.debug("GetCmdOutput(%s)->%s" % (repr(args), stdout))
     return stdout
 
+  def RunRemotePython(self, pycmd):

[dtu, 2012/10/23 22:15:04]

Only test images have Python. Ideally we'd like CRC to run on a CrOS machine out
of the box, but we haven't figured out yet whether that's doable, since we also
do things like SSH and SCP. nduca?

[hartmanng, 2012/11/19 18:49:13]

Done.

+    return self.GetAllCmdOutput(['python', '-c', '"%s"' % pycmd])
+

[nduca, 2012/11/06 04:28:01]

GetRemotePort should come with a unit test.

[hartmanng, 2012/11/19 18:49:13]

Done.

   def GetRemotePort(self):
-    global _next_remote_port
-    port = _next_remote_port
-    _next_remote_port += 1
+    pycmd = """import socket
+tmp = socket.socket()
+tmp.bind(('',0))
+print tmp.getsockname()[1]
+tmp.close()"""
+
+    port = int(self.RunRemotePython(pycmd)[0].strip())
     return port