[Sync] Convert sync to a static library.

components/sync/core/http_post_provider_interface.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_CORE_HTTP_POST_PROVIDER_INTERFACE_H_
 #define COMPONENTS_SYNC_CORE_HTTP_POST_PROVIDER_INTERFACE_H_
 
 #include <string>
 
-#include "components/sync/base/sync_export.h"
-
 namespace syncer {
 
 // An interface the embedding application (e.g. Chromium) implements to provide
 // required HTTP POST functionality to the syncer backend. This interface is
 // designed for one-time use. You create one, use it, and create another if you
 // want to make a subsequent POST.
-class SYNC_EXPORT HttpPostProviderInterface {
+class HttpPostProviderInterface {
  public:
   // Add additional headers to the request.
   virtual void SetExtraRequestHeaders(const char* headers) = 0;
 
   // Set the URL to POST to.
   virtual void SetURL(const char* url, int port) = 0;
 
   // Set the type, length and content of the POST payload.
   // |content_type| is a null-terminated MIME type specifier.
   // |content| is a data buffer; Do not interpret as a null-terminated string.
@@ skipping 26 matching lines @@
   // This must be safe to call from any thread.
   virtual void Abort() = 0;
 
  protected:
   virtual ~HttpPostProviderInterface() {}
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_CORE_HTTP_POST_PROVIDER_INTERFACE_H_