Remove old log files so they don't accumulate on try bots.

webkit/tools/layout_tests/layout_package/http_server.py

Index: webkit/tools/layout_tests/layout_package/http_server.py
===================================================================
--- webkit/tools/layout_tests/layout_package/http_server.py	(revision 20031)
+++ webkit/tools/layout_tests/layout_package/http_server.py	(working copy)
@@ -25,6 +25,13 @@
 def PathFromBase(*pathies):
   return google.path_utils.FindUpward(THISDIR, *pathies)
 
+def RemoveLogFiles(folder, starts_with):
+  files = os.listdir(folder)
+  for file in files:
+    if file.startswith(starts_with) :
+      full_path = os.path.join(folder, file)
+      os.remove(full_path)
+
 class HttpdNotStarted(Exception):
   pass
 
@@ -104,6 +111,10 @@
     log_file_name = "error.log-" + time_str + ".txt"
     error_log = os.path.join(self._output_dir, log_file_name)
 
+    # Remove old log files. We only need to keep the last ones.
+    RemoveLogFiles(self._output_dir, "access.log-")
+    RemoveLogFiles(self._output_dir, "error.log-")
+
     # Write out the config
     f = file(base_conf_file, 'rb')
     base_conf = f.read()