Don't let PRR kick in if there is less than a packets worth of bytes in

net/tools/quic/end_to_end_test.cc

 // Copyright (c) 2012 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 <stddef.h>
 #include <string>
 #include <sys/epoll.h>
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 654 matching lines @@
   string body;
   GenerateBody(&body, 1024 * 1024);
 
   HTTPMessage request(HttpConstants::HTTP_1_1,
                       HttpConstants::POST, "/foo");
   request.AddBody(body, true);
 
   EXPECT_EQ(kFooResponseBody, client_->SendCustomSynchronousRequest(request));
 }
 
-// TODO(rtenneti): This is flaky on ChromiumOS bots.
-// http://crbug.com/407756
-TEST_P(EndToEndTest, DISABLED_LargePostZeroRTTFailure) {
+TEST_P(EndToEndTest, LargePostZeroRTTFailure) {
   // Have the server accept 0-RTT without waiting a startup period.
   strike_register_no_startup_period_ = true;
 
   // Send a request and then disconnect. This prepares the client to attempt
   // a 0-RTT handshake for the next request.
   ASSERT_TRUE(Initialize());
 
   string body;
   GenerateBody(&body, 20480);
 
@@ skipping 702 matching lines @@
   QuicSession* session = dispatcher->session_map().begin()->second;
   EXPECT_EQ(0u, QuicSessionPeer::GetLocallyClosedStreamsHighestOffset(
       session).size());
   server_thread_->Resume();
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace tools
 }  // namespace net