[sync] Componentize sync: Part 2: Add SYNC_EXPORTs to files in src/sync/

sync/api/sync_error.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// 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 SYNC_API_SYNC_ERROR_H_
 #define SYNC_API_SYNC_ERROR_H_
 
 #include <iosfwd>
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
+#include "sync/base/sync_export.h"
 #include "sync/internal_api/public/base/model_type.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. They are considered
 // unrecoverable for the datatype creating them, and should only be used as
 // such.
 // This class is copy-friendly and thread-safe.
-class SyncError {
+class SYNC_EXPORT SyncError {
  public:
   // Default constructor refers to "no error", and IsSet() will return false.
   SyncError();
 
   // Create a new Sync error triggered by datatype |type| with debug message
   // |message| from the specified location. IsSet() will return true.
   // Will print the new error to LOG(ERROR).
   SyncError(const tracked_objects::Location& location,
             const std::string& message,
             ModelType type);
@@ skipping 43 matching lines @@
   std::string message_;
   ModelType type_;
 };
 
 // gmock printer helper.
 void PrintTo(const SyncError& sync_error, std::ostream* os);
 
 }  // namespace syncer
 
 #endif  // SYNC_API_SYNC_ERROR_H_