sync: Remove SyncSourceInfo

sync/sessions/nudge_tracker.h

 // Copyright 2013 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.
 //
 // A class to track the outstanding work required to bring the client back into
 // sync with the server.
 #ifndef SYNC_SESSIONS_NUDGE_TRACKER_H_
 #define SYNC_SESSIONS_NUDGE_TRACKER_H_
 
 #include <list>
 #include <map>
 
 #include "base/compiler_specific.h"
 #include "sync/base/sync_export.h"
 #include "sync/internal_api/public/base/model_type.h"
 #include "sync/internal_api/public/base/model_type_invalidation_map.h"
 #include "sync/protocol/sync.pb.h"
 #include "sync/sessions/data_type_tracker.h"
 
 namespace syncer {
 namespace sessions {
 
-struct SyncSourceInfo;
-
 class SYNC_EXPORT_PRIVATE NudgeTracker {
  public:
   static size_t kDefaultMaxPayloadsPerType;
 
   NudgeTracker();
   ~NudgeTracker();
 
   // Returns true if there is a good reason for performing a sync cycle.
   // This does not take into account whether or not this is a good *time* to
   // perform a sync cycle; that's the scheduler's job.
@@ skipping 36 matching lines @@
 
   // Returns true if any type is currenlty throttled.
   bool IsAnyTypeThrottled() const;
 
   // Returns true if |type| is currently throttled.
   bool IsTypeThrottled(ModelType type) const;
 
   // Returns the set of currently throttled types.
   ModelTypeSet GetThrottledTypes() const;
 
-  // A helper to return an old-style source info.  Used only to maintain
-  // compatibility with some old code.
-  SyncSourceInfo GetSourceInfo() const;
-
   // Returns the 'source' of the GetUpdate request.
   //
   // This flag is deprecated, but still used by the server.  There can be more
   // than one reason to perform a particular sync cycle.  The GetUpdatesTrigger
   // message will contain more reliable information about the reasons for
   // performing a sync.
   //
   // See the implementation for important information about the coalesce logic.
   sync_pb::GetUpdatesCallerInfo::GetUpdatesSource updates_source() const;
 
@@ skipping 39 matching lines @@
 
   size_t num_payloads_per_type_;
 
   DISALLOW_COPY_AND_ASSIGN(NudgeTracker);
 };
 
 }  // namespace sessions
 }  // namespace syncer
 
 #endif  // SYNC_SESSIONS_NUDGE_TRACKER_H_