[Sync] Convert sync to a static library.

components/sync/sessions_impl/sync_session.h

 // Copyright 2012 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 representing an attempt to synchronize the local syncable data
 // store with a sync server. A SyncSession instance is passed as a stateful
 // bundle throughout the sync cycle.  The SyncSession is not reused across
 // sync cycles; each cycle starts with a new one.
 
 #ifndef COMPONENTS_SYNC_SESSIONS_IMPL_SYNC_SESSION_H_
 #define COMPONENTS_SYNC_SESSIONS_IMPL_SYNC_SESSION_H_
 
 #include <map>
 #include <memory>
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "components/sync/base/model_type.h"
-#include "components/sync/base/sync_export.h"
 #include "components/sync/engine/model_safe_worker.h"
 #include "components/sync/engine_impl/sync_cycle_event.h"
 #include "components/sync/protocol/sync_protocol_error.h"
 #include "components/sync/sessions/sync_session_snapshot.h"
 #include "components/sync/sessions_impl/status_controller.h"
 #include "components/sync/sessions_impl/sync_session_context.h"
 
 namespace syncer {
 class ModelSafeWorker;
 class ProtocolEvent;
 
 namespace sessions {
 
 class NudgeTracker;
 
-class SYNC_EXPORT SyncSession {
+class SyncSession {
  public:
   // The Delegate services events that occur during the session requiring an
   // explicit (and session-global) action, as opposed to events that are simply
   // recorded in per-session state.
-  class SYNC_EXPORT Delegate {
+  class Delegate {
    public:
     // The client was throttled and should cease-and-desist syncing activity
     // until the specified time.
     virtual void OnThrottled(const base::TimeDelta& throttle_duration) = 0;
 
     // Some of the client's types were throttled.
     virtual void OnTypesThrottled(ModelTypeSet types,
                                   const base::TimeDelta& throttle_duration) = 0;
 
     // Silenced intervals can be out of phase with individual sessions, so the
@@ skipping 77 matching lines @@
   // Our controller for various status and error counters.
   std::unique_ptr<StatusController> status_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncSession);
 };
 
 }  // namespace sessions
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_SESSIONS_IMPL_SYNC_SESSION_H_