Implementing client policy and controller.

components/offline_pages/client_policy_controller.h

+// 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.
+
+#ifndef COMPONENTS_OFFLINE_PAGES_CLIENT_POLICY_CONTROLLER_H_
+#define COMPONENTS_OFFLINE_PAGES_CLIENT_POLICY_CONTROLLER_H_
+
+#include <stdint.h>
+
+#include <map>
+#include <string>
+
+#include "base/time/time.h"
+#include "components/offline_pages/offline_page_client_policy.h"
+
+namespace offline_pages {
+
+// Currently used for fallbacks like tests.
+static const char* kDefaultPolicy = "defaultPolicy";

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

const char kDefaultPolicy[] = 
is more common in the code base

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

Done.

+static const int64_t kUnlimitedPage = 0;

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

pages

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

Done.

+static const OfflinePageClientPolicy kDefaultClientPolicy =
+  {kDefaultPolicy, {LifetimePolicy::LifetimeType::TEMPORARY,

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

run git cl format

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

Done.

+               base::TimeDelta::FromDays(1), kUnlimitedPage}};
+
+class ClientPolicyController {
+ public:
+  static ClientPolicyController& GetInstance();

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

Search in components returns a * instead of reference for GetInstance. Please be
consistent.

For implementation, look up HistogramManager (lazy) or RLZTracker (using
base::Singleton --- that would do). 

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

Done.

+
+  OfflinePageClientPolicy GetPolicy(std::string name_space);

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

const ref name_space and this function is also const.

Add documentation (mention why you are making a copy of the policy)
Alternative would be to return const ref as well.

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

Done.

+
+ protected:
+  ClientPolicyController();
+
+  ~ClientPolicyController();
+
+  std::map<std::string, OfflinePageClientPolicy> policies_;
+
+  DISALLOW_COPY_AND_ASSIGN(ClientPolicyController);
+};
+
+} // namespace offline_pages
+
+#endif // COMPONENTS_OFFLINE_PAGES_CLIENT_POLICY_CONTROLLER_H_