[Remote suggestions] Prioritize wifi for soft fetches.

components/ntp_snippets/remote/persistent_scheduler.h

 // 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.
 
 #ifndef COMPONENTS_NTP_SNIPPETS_REMOTE_PERSISTENT_SCHEDULER_H_
 #define COMPONENTS_NTP_SNIPPETS_REMOTE_PERSISTENT_SCHEDULER_H_
 
 #include "base/macros.h"
 #include "base/time/time.h"
 
@@ skipping 17 matching lines @@
   // depending on network state. Any of the periods can be zero to indicate that
   // the corresponding task should not be scheduled. Returns whether the
   // scheduling was successful.
   virtual bool Schedule(base::TimeDelta period_wifi,
                         base::TimeDelta period_fallback) = 0;
 
   // Cancel any scheduled tasks. Equivalent to Schedule(0, 0). Returns whether
   // the scheduling was successful.
   virtual bool Unschedule() = 0;
 
+  // TODO(jkrcal): Get this information exposed in the platform-independent
+  // net::NetworkChangeNotifier and remove this function.
+  virtual bool IsOnUnmeteredConnection() = 0;
+
  protected:
   PersistentScheduler() = default;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PersistentScheduler);
 };
 
 }  // namespace ntp_snippets
 
 #endif  // COMPONENTS_NTP_SNIPPETS_REMOTE_PERSISTENT_SCHEDULER_H_