Move PolicyMap and its dependencies to components/policy/.

chrome/browser/policy/external_data_fetcher.cc

-// Copyright 2013 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 "chrome/browser/policy/external_data_fetcher.h"
-
-#include "base/callback.h"
-#include "chrome/browser/policy/external_data_manager.h"
-
-namespace policy {
-
-ExternalDataFetcher::ExternalDataFetcher(
-    base::WeakPtr<ExternalDataManager> manager,
-    const std::string& policy)
-    : manager_(manager),
-      policy_(policy) {
-}
-
-ExternalDataFetcher::ExternalDataFetcher(const ExternalDataFetcher& other)
-    : manager_(other.manager_),
-      policy_(other.policy_) {
-}
-
-ExternalDataFetcher::~ExternalDataFetcher() {
-}
-
-// static
-bool ExternalDataFetcher::Equals(const ExternalDataFetcher* first,
-                                 const ExternalDataFetcher* second) {
-  if (!first && !second)
-    return true;
-  if (!first || !second)
-    return false;
-  return first->manager_.get() == second->manager_.get() &&
-         first->policy_ == second->policy_;
-}
-
-void ExternalDataFetcher::Fetch(const FetchCallback& callback) const {
-  if (manager_)
-    manager_->Fetch(policy_, callback);
-  else
-    callback.Run(scoped_ptr<std::string>());
-}
-
-}  // namespace policy