Implementing client policy and controller.

components/offline_pages/client_policy_controller.cc

+// Copyright 2016 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/offline_pages/client_policy_controller.h"
+
+#include <utility>
+
+#include "base/time/time.h"
+
+using LifetimeType = offline_pages::LifetimePolicy::LifetimeType;
+
+namespace offline_pages {
+
+namespace {
+  OfflinePageClientPolicy TranslateToPolicy(

[fgorski, 2016/04/30 17:42:25]

fix indentation. (git cl format should align this to the beginning)

[fgorski, 2016/04/30 17:42:25]

MakePolicy is a better name

Also you could make it a static method on the policy class/instance and use it
in tests.

[romax, 2016/05/02 20:33:44]

Done.

+      std::string name_space,

[fgorski, 2016/04/30 17:42:24]

const ref

[romax, 2016/05/02 20:33:44]

Done.

+      LifetimeType lifetime_type,
+      base::TimeDelta expire_period,

[fgorski, 2016/04/30 17:42:25]

const ref

[romax, 2016/05/02 20:33:44]

Done.

+      int64_t page_limit) {
+    return {name_space, {lifetime_type, expire_period, page_limit}};
+  }
+}
+
+ClientPolicyController& ClientPolicyController::GetInstance() {
+  static ClientPolicyController instance;
+  return instance;
+}
+
+OfflinePageClientPolicy ClientPolicyController::GetPolicy(
+    std::string name_space) {
+  const auto& iter = policies_.find(name_space);
+  if (iter != policies_.end()) {

[fgorski, 2016/04/30 17:42:25]

braces not needed.

[romax, 2016/05/02 20:33:44]

Done.

+    return iter->second;
+  }
+  // Fallback when the namespace isn't defined.
+  return kDefaultClientPolicy;
+}
+
+ClientPolicyController::ClientPolicyController() {
+  policies_.clear();
+  // TODO(romax) Make here somehow more clever.
+  policies_.insert(std::make_pair("bookmark",

[fgorski, 2016/04/30 17:42:25]

you should be referring to a const here. and below (3x)

[romax, 2016/05/02 20:33:44]

Acknowledged.

+      TranslateToPolicy("bookmark", LifetimeType::TEMPORARY,
+                        base::TimeDelta::FromDays(7), kUnlimitedPage)));
+  policies_.insert(std::make_pair("last_n",
+      TranslateToPolicy("last_n", LifetimeType::TEMPORARY,
+                        base::TimeDelta::FromDays(2), 20)));
+}
+
+ClientPolicyController::~ClientPolicyController() {

[fgorski, 2016/04/30 17:42:25]

Order of methods should be:
ctor
dtor
static
instance

[romax, 2016/05/02 20:33:44]

Done.

+}
+
+} // namespace offline_pages