clang/win: Fix component build after https://codereview.chromium.org/1149383004/

content/browser/service_worker/service_worker_info.h

 // Copyright 2014 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 CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_INFO_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_INFO_H_
 
 #include <vector>
 
 #include "base/time/time.h"
 #include "content/browser/service_worker/service_worker_version.h"
 #include "content/common/content_export.h"
 #include "url/gurl.h"
 
 namespace content {
 
 struct CONTENT_EXPORT ServiceWorkerVersionInfo {
  public:
-  struct ClientInfo {
+  struct CONTENT_EXPORT ClientInfo {
    public:
     ClientInfo();
     ClientInfo(int process_id, int route_id, ServiceWorkerProviderType type);
     ~ClientInfo();
     int process_id;
     int route_id;
     ServiceWorkerProviderType type;
   };
 
   ServiceWorkerVersionInfo();
@@ skipping 43 matching lines @@
   ServiceWorkerVersionInfo active_version;
   ServiceWorkerVersionInfo waiting_version;
   ServiceWorkerVersionInfo installing_version;
 
   int64_t stored_version_size_bytes;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_INFO_H_