[Sync] Convert sync to a static library.

components/sync/base/cryptographer.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_BASE_CRYPTOGRAPHER_H_
 #define COMPONENTS_SYNC_BASE_CRYPTOGRAPHER_H_
 
 #include <map>
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
 #include "base/memory/linked_ptr.h"
 #include "components/sync/base/nigori.h"
-#include "components/sync/base/sync_export.h"
 #include "components/sync/protocol/encryption.pb.h"
 
 namespace sync_pb {
 class NigoriKeyBag;
 class NigoriSpecifics;
 }
 
 namespace syncer {
 
 class Encryptor;
 
-SYNC_EXPORT extern const char kNigoriTag[];
+extern const char kNigoriTag[];
 
 // The parameters used to initialize a Nigori instance.
 struct KeyParams {
   std::string hostname;
   std::string username;
   std::string password;
 };
 
 // This class manages the Nigori objects used to encrypt and decrypt sensitive
 // sync data (eg. passwords). Each Nigori object knows how to handle data
 // protected with a particular passphrase.
 //
 // Whenever an update to the Nigori sync node is received from the server,
 // SetPendingKeys should be called with the encrypted contents of that node.
 // Most likely, an updated Nigori node means that a new passphrase has been set
 // and that future node updates won't be decryptable. To remedy this, the user
 // should be prompted for the new passphrase and DecryptPendingKeys be called.
 //
 // Whenever a update to an encrypted node is received from the server,
 // CanDecrypt should be used to verify whether the Cryptographer can decrypt
 // that node. If it cannot, then the application of that update should be
 // delayed until after it can be decrypted.
-class SYNC_EXPORT Cryptographer {
+class Cryptographer {
  public:
   // Does not take ownership of |encryptor|.
   explicit Cryptographer(Encryptor* encryptor);
   explicit Cryptographer(const Cryptographer& other);
   ~Cryptographer();
 
   // |restored_bootstrap_token| can be provided via this method to bootstrap
   // Cryptographer instance into the ready state (is_ready will be true).
   // It must be a string that was previously built by the
   // GetSerializedBootstrapToken function.  It is possible that the token is no
@@ skipping 150 matching lines @@
   std::string default_nigori_name_;
 
   std::unique_ptr<sync_pb::EncryptedData> pending_keys_;
 
   DISALLOW_ASSIGN(Cryptographer);
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_BASE_CRYPTOGRAPHER_H_