components: Cleanup class/struct fwd declarations

components/domain_reliability/scheduler.h

 // Copyright 2014 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_DOMAIN_RELIABILITY_SCHEDULER_H_
 #define COMPONENTS_DOMAIN_RELIABILITY_SCHEDULER_H_
 
 #include <stddef.h>
 
 #include <memory>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/memory/scoped_vector.h"
 #include "base/time/time.h"
 #include "components/domain_reliability/domain_reliability_export.h"
 #include "components/domain_reliability/uploader.h"
 #include "net/base/backoff_entry.h"
 
 namespace base {
 class Value;
 }  // namespace base
 
 namespace domain_reliability {
 
-struct DomainReliabilityConfig;
 class MockableTime;
 
 // Determines when an upload should be scheduled. A domain's config will
 // specify minimum and maximum upload delays; the minimum upload delay ensures
 // that Chrome will not send too many upload requests to a site by waiting at
 // least that long after the first beacon, while the maximum upload delay makes
 // sure the server receives the reports while they are still fresh.
 //
 // When everything is working fine, the scheduler will return precisely that
 // interval. If all uploaders have failed, then the beginning or ending points
@@ skipping 103 matching lines @@
   bool last_upload_finished_;
   base::TimeTicks last_upload_start_time_;
   base::TimeTicks last_upload_end_time_;
   size_t last_upload_collector_index_;
   bool last_upload_success_;
 };
 
 }  // namespace domain_reliability
 
 #endif  // COMPONENTS_DOMAIN_RELIABILITY_SCHEDULER_H_