[Offline pages] Add a builder and feature struct to policy

components/offline_pages/offline_page_client_policy.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_OFFLINE_PAGE_CLIENT_POLICY_H_
 #define COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_CLIENT_POLICY_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 21 matching lines @@
   LifetimeType lifetime_type;
 
   // The time after which the page expires.
   base::TimeDelta expiration_period;
 
   // The maximum number of pages allowed to be saved by the namespace.
   // kUnlimitedPages (defined above) means no limit set.
   size_t page_limit;
 };
 
+// The struct describing feature set of the offline pages.
+struct FeaturePolicy {
+  bool is_enabled_for_downloads;
+  bool is_user_requested;
+};
+
 // The struct describing policies for various namespaces (Bookmark, Last-N etc.)
 // used by offline page model. The name_space is supposed to be key, so that
 // it's sufficient to compare name_space only when doing comparisons.
 struct OfflinePageClientPolicy {
   // Namespace to which the policy applied.
   std::string name_space;
 
   // Policy to control the lifetime of a page generated by this namespace.
   LifetimePolicy lifetime_policy;
 
   // How many pages for the same online URL can be stored at any time.
   // kUnlimitedPages means there's no limit.
   size_t pages_allowed_per_url;

[fgorski, 2016/08/31 21:31:00]

wouldn't this qualify as feature policy?

[chili, 2016/09/06 20:55:20]

I see feature policies (perhaps I should change name here too) as boolean bits
answering whether a particular policy has a particular feature enabled.  While
pages allowed per url may be a per-feature policy, it doesn't quite fit in the
same way as the others.

+
+  FeaturePolicy feature_policy;
+};
+
+class OfflinePageClientPolicyBuilder {
+ public:
+  OfflinePageClientPolicyBuilder(const std::string& name_space,
+                                 LifetimePolicy::LifetimeType lifetime_type,
+                                 size_t page_limit,
+                                 size_t pages_allowed_per_url) {
+    policy_ = OfflinePageClientPolicy({name_space,
+            {lifetime_type, base::TimeDelta::FromDays(0), page_limit},
+            pages_allowed_per_url,
+            {false, false}});
+  }
+
+  ~OfflinePageClientPolicyBuilder() {}
+
+  const OfflinePageClientPolicy Build() { return policy_; }
+
+  OfflinePageClientPolicyBuilder& SetExpirePeriod(
+      const base::TimeDelta& expire_period) {
+    policy_.lifetime_policy.expiration_period = expire_period;
+    return *this;
+  }
+
+  OfflinePageClientPolicyBuilder& SetIsDownloaded(
+      const bool is_downloaded) {
+    policy_.feature_policy.is_enabled_for_downloads = is_downloaded;
+    return *this;
+  }
+
+  OfflinePageClientPolicyBuilder& SetUserRequested(
+      const bool user_requested) {
+    policy_.feature_policy.is_user_requested = user_requested;
+    return *this;
+  }
+
+ private:
+  OfflinePageClientPolicy policy_;
 };
 
 }  // namespace offline_pages
 
 #endif  // COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_CLIENT_POLICY_H_