Introduce a layering in the invalidation component as public and impl

components/invalidation/invalidation_service_util.cc

-// Copyright 2014 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 "components/invalidation/invalidation_service_util.h"
-
-#include "base/base64.h"
-#include "base/command_line.h"
-#include "base/logging.h"
-#include "base/rand_util.h"
-#include "components/invalidation/invalidation_switches.h"
-
-namespace invalidation {
-
-notifier::NotifierOptions ParseNotifierOptions(
-    const base::CommandLine& command_line) {
-  notifier::NotifierOptions notifier_options;
-
-  if (command_line.HasSwitch(switches::kSyncNotificationHostPort)) {
-    notifier_options.xmpp_host_port =
-        net::HostPortPair::FromString(
-            command_line.GetSwitchValueASCII(
-                switches::kSyncNotificationHostPort));
-    DVLOG(1) << "Using " << notifier_options.xmpp_host_port.ToString()
-             << " for test sync notification server.";
-  }
-
-  notifier_options.allow_insecure_connection =
-      command_line.HasSwitch(switches::kSyncAllowInsecureXmppConnection);
-  DVLOG_IF(1, notifier_options.allow_insecure_connection)
-      << "Allowing insecure XMPP connections.";
-
-  return notifier_options;
-}
-
-std::string GenerateInvalidatorClientId() {
-  // Generate a GUID with 128 bits worth of base64-encoded randomness.
-  // This format is similar to that of sync's cache_guid.
-  const int kGuidBytes = 128 / 8;
-  std::string guid;
-  base::Base64Encode(base::RandBytesAsString(kGuidBytes), &guid);
-  DCHECK(!guid.empty());
-  return guid;
-}
-
-}  // namespace invalidation