[Sync] Convert sync to a static library.

components/sync/core/internal_components_factory.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.
 //
 // InternalComponentsFactory exists so that tests can override creation of
 // components used by the SyncManager that are not exposed across the sync
 // API boundary.
 
 #ifndef COMPONENTS_SYNC_CORE_INTERNAL_COMPONENTS_FACTORY_H_
 #define COMPONENTS_SYNC_CORE_INTERNAL_COMPONENTS_FACTORY_H_
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/files/file_path.h"
-#include "components/sync/base/sync_export.h"
 #include "components/sync/engine/model_safe_worker.h"
 
 namespace syncer {
 
 class CancelationSignal;
 class ExtensionsActivity;
 class ModelTypeRegistry;
 class ServerConnectionManager;
 class SyncEngineEventListener;
 class SyncScheduler;
 
 namespace sessions {
 class DebugInfoGetter;
 class SyncSessionContext;
 }
 
 namespace syncable {
 class Directory;
 class DirectoryBackingStore;
 }
 
-class SYNC_EXPORT InternalComponentsFactory {
+class InternalComponentsFactory {
  public:
   enum EncryptionMethod {
     ENCRYPTION_LEGACY,
     // Option to enable support for keystore key based encryption.
     ENCRYPTION_KEYSTORE
   };
 
   enum BackoffOverride {
     BACKOFF_NORMAL,
     // Use this value for integration testing to avoid long delays /
@@ skipping 57 matching lines @@
                              const base::FilePath& backing_filepath) = 0;
 
   // Returns the Switches struct that this object is using as configuration, if
   // the implementation is making use of one.
   virtual Switches GetSwitches() const = 0;
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_CORE_INTERNAL_COMPONENTS_FACTORY_H_