More aggressive IO asserts in content_browsertests.

net/test/spawned_test_server/local_test_server.cc

 // 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.
 
 #include "net/test/spawned_test_server/local_test_server.h"
 
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/threading/thread_restrictions.h"
 #include "base/values.h"
 #include "net/base/host_port_pair.h"
 #include "net/base/net_errors.h"
 #include "net/test/python_utils.h"
 #include "url/gurl.h"
 
 namespace net {
 
 namespace {
 
@@ skipping 65 matching lines @@
                                  .Append(FILE_PATH_LITERAL("testserver"));
   *testserver_path = testserver_dir.Append(FILE_PATH_LITERAL("testserver.py"));
   return true;
 }
 
 bool LocalTestServer::Start() {
   return StartInBackground() && BlockUntilStarted();
 }
 
 bool LocalTestServer::StartInBackground() {
+  base::ThreadRestrictions::ScopedAllowIO allow_io_from_test_code;
+
   // Get path to Python server script.
   base::FilePath testserver_path;
   if (!GetTestServerPath(&testserver_path))
     return false;
 
   if (!SetPythonPath())
     return false;
 
   if (!LaunchPython(testserver_path))
     return false;
@@ skipping 134 matching lines @@
       break;
     default:
       NOTREACHED();
       return false;
   }
 
   return true;
 }
 
 }  // namespace net