Remove UserPolicyDiskCache; it is not used.

chrome/browser/chromeos/policy/user_policy_disk_cache.cc

Index: chrome/browser/chromeos/policy/user_policy_disk_cache.cc
diff --git a/chrome/browser/chromeos/policy/user_policy_disk_cache.cc b/chrome/browser/chromeos/policy/user_policy_disk_cache.cc
deleted file mode 100644
index 5a97941ed0240a1fd921e604e1bad66d0e46df23..0000000000000000000000000000000000000000
--- a/chrome/browser/chromeos/policy/user_policy_disk_cache.cc
+++ /dev/null
@@ -1,148 +0,0 @@
-// 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 "chrome/browser/chromeos/policy/user_policy_disk_cache.h"
-
-#include "base/bind.h"
-#include "base/files/file_util.h"
-#include "base/location.h"
-#include "base/logging.h"
-#include "base/metrics/histogram_macros.h"
-#include "base/sequenced_task_runner.h"
-#include "base/single_thread_task_runner.h"
-#include "base/threading/thread_task_runner_handle.h"
-#include "components/policy/core/common/cloud/enterprise_metrics.h"
-#include "components/policy/proto/device_management_local.pb.h"
-
-namespace em = enterprise_management;
-
-namespace policy {
-
-UserPolicyDiskCache::Delegate::~Delegate() {}
-
-UserPolicyDiskCache::UserPolicyDiskCache(
-    const base::WeakPtr<Delegate>& delegate,
-    const base::FilePath& backing_file_path,
-    scoped_refptr<base::SequencedTaskRunner> background_task_runner)
-    : delegate_(delegate),
-      backing_file_path_(backing_file_path),
-      origin_task_runner_(base::ThreadTaskRunnerHandle::Get()),
-      background_task_runner_(background_task_runner) {
-}
-
-void UserPolicyDiskCache::Load() {
-  DCHECK(origin_task_runner_->RunsTasksOnCurrentThread());
-  bool ret = background_task_runner_->PostTask(
-      FROM_HERE, base::Bind(&UserPolicyDiskCache::LoadOnFileThread, this));
-  DCHECK(ret);
-}
-
-void UserPolicyDiskCache::Store(
-    const em::CachedCloudPolicyResponse& policy) {
-  DCHECK(origin_task_runner_->RunsTasksOnCurrentThread());
-  background_task_runner_->PostTask(
-      FROM_HERE,
-      base::Bind(&UserPolicyDiskCache::StoreOnFileThread, this, policy));
-}
-
-UserPolicyDiskCache::~UserPolicyDiskCache() {}
-
-void UserPolicyDiskCache::LoadOnFileThread() {
-  DCHECK(background_task_runner_->RunsTasksOnCurrentThread());
-
-  em::CachedCloudPolicyResponse cached_response;
-  if (!base::PathExists(backing_file_path_)) {
-    LoadDone(LOAD_RESULT_NOT_FOUND, cached_response);
-    return;
-  }
-
-  // Read the protobuf from the file.
-  std::string data;
-  if (!base::ReadFileToString(backing_file_path_, &data)) {
-    LOG(WARNING) << "Failed to read policy data from "
-                 << backing_file_path_.value();
-    LoadDone(LOAD_RESULT_READ_ERROR, cached_response);
-    return;
-  }
-
-  // Decode it.
-  if (!cached_response.ParseFromArray(data.c_str(), data.size())) {
-    LOG(WARNING) << "Failed to parse policy data read from "
-                 << backing_file_path_.value();
-    LoadDone(LOAD_RESULT_PARSE_ERROR, cached_response);
-    return;
-  }
-
-  LoadDone(LOAD_RESULT_SUCCESS, cached_response);
-}
-
-void UserPolicyDiskCache::LoadDone(
-    LoadResult result,
-    const em::CachedCloudPolicyResponse& policy) {
-  origin_task_runner_->PostTask(
-      FROM_HERE,
-      base::Bind(
-          &UserPolicyDiskCache::ReportResultOnUIThread, this, result, policy));
-}
-
-void UserPolicyDiskCache::ReportResultOnUIThread(
-    LoadResult result,
-    const em::CachedCloudPolicyResponse& policy) {
-  DCHECK(origin_task_runner_->RunsTasksOnCurrentThread());
-
-  switch (result) {
-    case LOAD_RESULT_NOT_FOUND:
-      break;
-    case LOAD_RESULT_READ_ERROR:
-    case LOAD_RESULT_PARSE_ERROR:
-      UMA_HISTOGRAM_ENUMERATION(policy::kMetricPolicy,
-                                kMetricPolicyLoadFailed,
-                                policy::kMetricPolicySize);
-      break;
-    case LOAD_RESULT_SUCCESS:
-      UMA_HISTOGRAM_ENUMERATION(policy::kMetricPolicy,
-                                kMetricPolicyLoadSucceeded,
-                                policy::kMetricPolicySize);
-      break;
-  }
-
-  if (delegate_.get())
-    delegate_->OnDiskCacheLoaded(result, policy);
-}
-
-void UserPolicyDiskCache::StoreOnFileThread(
-    const em::CachedCloudPolicyResponse& policy) {
-  DCHECK(background_task_runner_->RunsTasksOnCurrentThread());
-  std::string data;
-  if (!policy.SerializeToString(&data)) {
-    LOG(WARNING) << "Failed to serialize policy data";
-    UMA_HISTOGRAM_ENUMERATION(policy::kMetricPolicy,
-                              kMetricPolicyStoreFailed,
-                              policy::kMetricPolicySize);
-    return;
-  }
-
-  if (!base::CreateDirectory(backing_file_path_.DirName())) {
-    LOG(WARNING) << "Failed to create directory "
-                 << backing_file_path_.DirName().value();
-    UMA_HISTOGRAM_ENUMERATION(policy::kMetricPolicy,
-                              kMetricPolicyStoreFailed,
-                              policy::kMetricPolicySize);
-    return;
-  }
-
-  int size = data.size();
-  if (base::WriteFile(backing_file_path_, data.c_str(), size) != size) {
-    LOG(WARNING) << "Failed to write " << backing_file_path_.value();
-    UMA_HISTOGRAM_ENUMERATION(policy::kMetricPolicy,
-                              kMetricPolicyStoreFailed,
-                              policy::kMetricPolicySize);
-    return;
-  }
-  UMA_HISTOGRAM_ENUMERATION(policy::kMetricPolicy,
-                            kMetricPolicyStoreSucceeded,
-                            policy::kMetricPolicySize);
-}
-
-}  // namespace policy