Use base::TimeTicks instead of base::Time to resolve flaky tests using local_test_server_posix.cc.

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 42 matching lines @@
   std::string port_string_;
   DISALLOW_COPY_AND_ASSIGN(OrphanedTestServerFilter);
 };
 
 // Given a file descriptor, reads into |buffer| until |bytes_max|
 // bytes has been read or an error has been encountered.  Returns true
 // if the read was successful.  |remaining_time| is used as a timeout.
 bool ReadData(int fd, ssize_t bytes_max, uint8* buffer,
               base::TimeDelta* remaining_time) {
   ssize_t bytes_read = 0;
-  base::Time previous_time = base::Time::Now();
+  base::TimeTicks previous_time = base::TimeTicks::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 == 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::TimeTicks current_time = base::TimeTicks::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,
                                           bytes_max - bytes_read));
     if (num_bytes <= 0)
       return false;
     bytes_read += num_bytes;
@@ skipping 78 matching lines @@
 
   if (!ParseServerData(server_data)) {
     LOG(ERROR) << "Could not parse server_data: " << server_data;
     return false;
   }
 
   return true;
 }
 
 }  // namespace net