[NTP::Push] Adding BreakingNewsSuggestionsProvider

components/ntp_snippets/breaking_news/subscription_manager.h

 // Copyright 2017 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_NTP_SNIPPETS_BREAKING_NEWS_SUBSCRIPTION_MANAGER_H_
 #define COMPONENTS_NTP_SNIPPETS_BREAKING_NEWS_SUBSCRIPTION_MANAGER_H_
 
 #include "components/ntp_snippets/breaking_news/subscription_json_request.h"
 #include "components/prefs/pref_registry_simple.h"
+#include "components/version_info/version_info.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "url/gurl.h"
 
 class PrefRegistrySimple;
 
 namespace ntp_snippets {
 
+// Returns the appropriate API endpoint for subscribing for push updates, in
+// consideration of the channel and field trial parameters.
+GURL GetPushUpdatesSubscriptionEndpoint(version_info::Channel channel);
+
+// Returns the appropriate API endpoint for unsubscribing for push updates, in
+// consideration of the channel and field trial parameters.
+GURL GetPushUpdatesUnsubscriptionEndpoint(version_info::Channel channel);
+
 // Class that wraps around the functionality of SubscriptionJsonRequest. It uses
 // the SubscriptionJsonRequest to send subscription and unsubscription requests
 // to the content suggestions server and does the bookkeeping for the data used
 // for subscription. Bookkeeping is required to detect any change (e.g. the
 // token render invalid), and resubscribe accordingly.
 class SubscriptionManager {
  public:
   SubscriptionManager(
       scoped_refptr<net::URLRequestContextGetter> url_request_context_getter,
       PrefService* pref_service,
@@ skipping 26 matching lines @@
   const GURL subscribe_url_;
   const GURL unsubscribe_url_;
 
   void DidSubscribe(const ntp_snippets::Status& status);
   void DidUnsubscribe(const ntp_snippets::Status& status);
 
   DISALLOW_COPY_AND_ASSIGN(SubscriptionManager);
 };
 }
 #endif  // COMPONENTS_NTP_SNIPPETS_BREAKING_NEWS_SUBSCRIPTION_MANAGER_H_