Support HTTP test-server based net unit tests on Android.

tools/android/forwarder2/common.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 "tools/android/forwarder2/common.h"
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "base/eintr_wrapper.h"
+#include "base/logging.h"
+#include "base/safe_strerror_posix.h"
+
+namespace forwarder2 {
+
+void PError(const char* msg) {
+  LOG(ERROR) << msg << ": " << safe_strerror(errno);
+}
+
+void CloseFD(int fd) {
+  const int errno_copy = errno;
+  if (HANDLE_EINTR(close(fd)) < 0) {
+    PError("close");
+    errno = errno_copy;
+  }
+}
+
+}  // namespace forwarder2