[NTP::Push] Adding BreakingNewsSuggestionsProvider

components/ntp_snippets/ntp_snippets_constants.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/ntp_snippets/ntp_snippets_constants.h"
 
 namespace ntp_snippets {
 
 const base::FilePath::CharType kDatabaseFolder[] =
     FILE_PATH_LITERAL("NTPSnippets");
 
 const char kContentSuggestionsServer[] =
     "https://chromecontentsuggestions-pa.googleapis.com/v1/suggestions/fetch";
 const char kContentSuggestionsStagingServer[] =
     "https://staging-chromecontentsuggestions-pa.googleapis.com/v1/suggestions/"
     "fetch";
 const char kContentSuggestionsAlphaServer[] =
     "https://alpha-chromecontentsuggestions-pa.sandbox.googleapis.com/v1/"
     "suggestions/fetch";
 
+const char kPushUpdatesSubscriptionServer[] =
+    "https://chromecontentsuggestions-pa.googleapis.com/v1/suggestions/"
+    "subscribe";
+const char kPushUpdatesSubscriptionStagingServer[] =
+    "https://staging-chromecontentsuggestions-pa.googleapis.com/v1/suggestions/"
+    "subscribe";
+const char kPushUpdatesSubscriptionAlphaServer[] =
+    "https://alpha-chromecontentsuggestions-pa.sandbox.googleapis.com/v1/"
+    "suggestions/subscribe";
+
 }  // namespace ntp_snippets