Add request type to FetchSuggestionsRequest.

components/ntp_snippets/ntp_snippets_fetcher.h

Index: components/ntp_snippets/ntp_snippets_fetcher.h
diff --git a/components/ntp_snippets/ntp_snippets_fetcher.h b/components/ntp_snippets/ntp_snippets_fetcher.h
index 0cf2b550be9ee57e101a23558868da650f5277bc..f0800cd5699b5550f56d5533cf03c9fbe18fc545 100644
--- a/components/ntp_snippets/ntp_snippets_fetcher.h
+++ b/components/ntp_snippets/ntp_snippets_fetcher.h
@@ -156,6 +156,7 @@ class NTPSnippetsFetcher : public OAuth2TokenService::Consumer,
     std::set<std::string> host_restricts;
     std::set<std::string> excluded_ids;
     int count_to_fetch;
+    bool interactive_request;
 
     RequestParams();
     ~RequestParams();
@@ -238,6 +239,9 @@ class NTPSnippetsFetcher : public OAuth2TokenService::Consumer,
   // Should we apply host restriction? It is loaded from variation parameters.
   bool use_host_restriction_;
 
+  // Is the request user initiated?
+  bool interactive_request_;
+
   // Allow for an injectable tick clock for testing.
   std::unique_ptr<base::TickClock> tick_clock_;