[NTP::Push] Adding BreakingNewsSuggestionsProvider

components/ntp_snippets/breaking_news/subscription_manager.cc

 // 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.
 
 #include "components/ntp_snippets/breaking_news/subscription_manager.h"
 #include "base/bind.h"
 #include "components/ntp_snippets/breaking_news/subscription_json_request.h"
+#include "components/ntp_snippets/ntp_snippets_constants.h"
 #include "components/ntp_snippets/pref_names.h"
 #include "components/prefs/pref_service.h"
 
 namespace ntp_snippets {
 
 using internal::SubscriptionJsonRequest;
 
 SubscriptionManager::SubscriptionManager(
     scoped_refptr<net::URLRequestContextGetter> url_request_context_getter,
     PrefService* pref_service,
@@ skipping 37 matching lines @@
 }
 
 void SubscriptionManager::Unsubscribe(const std::string& token) {
   // TODO(mamir): Implement.
 }
 
 void SubscriptionManager::RegisterProfilePrefs(PrefRegistrySimple* registry) {
   registry->RegisterStringPref(prefs::kContentSuggestionsSubscriptionDataToken,
                                std::string());
 }
+
+GURL GetPushUpdatesSubscriptionEndpoint(version_info::Channel channel) {
+  // TODO(mamir) do we need this?

[sfiera, 2017/06/07 13:58:15]

I like having a param :) When I'm working, I use alpha as the backend, instead
of prod/staging, so I can develop against the latest features on the server.

[mamir, 2017/06/08 09:58:28]

Done.

+  // std::string endpoint = variations::GetVariationParamValueByFeature(
+  //     ntp_snippets::kArticleSuggestionsFeature, kContentSuggestionsBackend);
+  // if (!endpoint.empty()) {
+  //   return GURL{endpoint};
+  // }
+
+  switch (channel) {
+    case version_info::Channel::STABLE:
+    case version_info::Channel::BETA:
+      return GURL{kPushUpdatesSubscriptionServer};
+
+    case version_info::Channel::DEV:
+    case version_info::Channel::CANARY:
+    case version_info::Channel::UNKNOWN:
+      return GURL{kPushUpdatesSubscriptionStagingServer};
+  }
+  NOTREACHED();
+  return GURL{kPushUpdatesSubscriptionStagingServer};
+}
 }  // namespace ntp_snippets