[NTP::Push] Adding BreakingNewsSuggestionsProvider

components/ntp_snippets/breaking_news/subscription_manager.h

Index: components/ntp_snippets/breaking_news/subscription_manager.h
diff --git a/components/ntp_snippets/breaking_news/subscription_manager.h b/components/ntp_snippets/breaking_news/subscription_manager.h
index 9833611854293b252a7a9b494102d449c5886b91..8854797ca0626c61b753bc9745c272276bc373e8 100644
--- a/components/ntp_snippets/breaking_news/subscription_manager.h
+++ b/components/ntp_snippets/breaking_news/subscription_manager.h
@@ -7,6 +7,7 @@
 
 #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"
 
@@ -14,6 +15,14 @@ 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