[Sync] Convert sync to a static library.

components/sync/api/sync_error.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.
 
 #ifndef COMPONENTS_SYNC_API_SYNC_ERROR_H_
 #define COMPONENTS_SYNC_API_SYNC_ERROR_H_
 
 #include <iosfwd>
 #include <memory>
 #include <string>
 
 #include "components/sync/base/model_type.h"
-#include "components/sync/base/sync_export.h"
 
 namespace tracked_objects {
 class Location;
 }  // namespace tracked_objects
 
 namespace syncer {
 
 // Sync errors are used for debug purposes and handled internally and/or
 // exposed through Chrome's "about:sync" internal page.
 // This class is copy-friendly and thread-safe.
-class SYNC_EXPORT SyncError {
+class SyncError {
  public:
   // Error types are used to distinguish general datatype errors (which result
   // in the datatype being disabled) from actionable sync errors (which might
   // have more complicated results).
   enum ErrorType {
     UNSET,                 // No error.
     UNRECOVERABLE_ERROR,   // An unrecoverable runtime error was encountered,
                            // and sync should be disabled and purged completely.
     DATATYPE_ERROR,        // A datatype error was encountered, and the datatype
                            // should be disabled and purged completely. Note
@@ skipping 80 matching lines @@
   void Clear();
 
   // unique_ptr is necessary because Location objects aren't assignable.
   std::unique_ptr<tracked_objects::Location> location_;
   std::string message_;
   ModelType model_type_;
   ErrorType error_type_;
 };
 
 // gmock printer helper.
-SYNC_EXPORT void PrintTo(const SyncError& sync_error, std::ostream* os);
+void PrintTo(const SyncError& sync_error, std::ostream* os);
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_API_SYNC_ERROR_H_