Make net/test/test_server correctly report timeouts.

net/test/local_test_server_posix.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 "net/test/local_test_server.h"
 
 #include <poll.h>
 
 #include <vector>
 
@@ skipping 52 matching lines @@
   base::Time previous_time = base::Time::Now();
   while (bytes_read < bytes_max) {
     struct pollfd poll_fds[1];
 
     poll_fds[0].fd = fd;
     poll_fds[0].events = POLLIN | POLLPRI;
     poll_fds[0].revents = 0;
 
     int rv = HANDLE_EINTR(poll(poll_fds, 1,
                                remaining_time->InMilliseconds()));
-    if (rv != 1) {
-      PLOG(ERROR) << "poll() failed for child file descriptor";
+    if (rv == 0) {
+      LOG(ERROR) << "poll() timed out; bytes_read=" << bytes_read;
+      return false;
+    } else if (rv < 0) {
+      PLOG(ERROR) << "poll() failed for child file descriptor; bytes_read="
+                  << bytes_read;
       return false;
     }
 
     base::Time current_time = base::Time::Now();
     base::TimeDelta elapsed_time_cycle = current_time - previous_time;
     DCHECK_GE(elapsed_time_cycle.InMilliseconds(), 0);
     *remaining_time -= elapsed_time_cycle;
     previous_time = current_time;
 
     ssize_t num_bytes = HANDLE_EINTR(read(fd, buffer + bytes_read,
@@ skipping 78 matching lines @@
 
   if (!ParseServerData(server_data)) {
     LOG(ERROR) << "Could not parse server_data: " << server_data;
     return false;
   }
 
   return true;
 }
 
 }  // namespace net