[Remote suggestions] Prioritize wifi for soft fetches.

components/ntp_snippets/pref_names.h

Index: components/ntp_snippets/pref_names.h
diff --git a/components/ntp_snippets/pref_names.h b/components/ntp_snippets/pref_names.h
index ee604861932495f88f8ae3df6d9d1c71f470f1fb..9826eb9e9cab9403d0c73cf79e3080b0370bc27c 100644
--- a/components/ntp_snippets/pref_names.h
+++ b/components/ntp_snippets/pref_names.h
@@ -20,11 +20,12 @@ extern const char kRemoteSuggestionCategories[];
 extern const char kSnippetLastFetchAttempt[];
 // The pref name for the currently applied minimal interval between two
 // successive soft background fetches that react to user activity (such as
-// opening Chrome).
-extern const char kSnippetSoftFetchingIntervalOnUsageEvent[];
+// opening Chrome) when there is a WiFi connectivity.
+extern const char kSnippetSoftFetchingIntervalWifi[];
 // The pref name for the currently applied minimal interval between two
-// successive soft brackground fetches when the New Tab Page is opened.
-extern const char kSnippetSoftFetchingIntervalOnNtpOpened[];
+// successive soft background fetches that react to user activity (such as
+// opening Chrome) when there is no WiFi connectivity.
+extern const char kSnippetSoftFetchingIntervalFallback[];
 
 // The pref name for the currently-scheduled background fetching interval when
 // there is WiFi connectivity.