[Sync] Convert sync to a static library.

components/sync/syncable/syncable_id.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_SYNCABLE_SYNCABLE_ID_H_
 #define COMPONENTS_SYNC_SYNCABLE_SYNCABLE_ID_H_
 
 #include <iosfwd>
 #include <limits>
 #include <memory>
 #include <sstream>
 #include <string>
 
 #include "base/containers/hash_tables.h"
-#include "components/sync/base/sync_export.h"
 
 namespace base {
 class StringValue;
 }
 
 namespace sql {
 class Statement;
 }
 
 namespace syncer {
 namespace syncable {
 struct EntryKernel;
 class Id;
 
-SYNC_EXPORT std::ostream& operator<<(std::ostream& out, const Id& id);
+std::ostream& operator<<(std::ostream& out, const Id& id);
 
 // For historical reasons, 3 concepts got everloaded into the Id:
 // 1. A unique, opaque identifier for the object.
 // 2. Flag specifing whether server know about this object.
 // 3. Flag for root.
 //
 // We originally wrapped an integer for this information, but now we use a
 // string. It will have one of three forms:
 // 1. c<client only opaque id> for client items that have not been committed.
 // 2. r for the root item.
 // 3. s<server provided opaque id> for items that the server knows about.
-class SYNC_EXPORT Id {
+class Id {
  public:
   inline Id() {}
   inline Id(const Id& that) { Copy(that); }
   inline Id& operator=(const Id& that) {
     Copy(that);
     return *this;
   }
   inline void Copy(const Id& that) { this->s_ = that.s_; }
   inline bool IsRoot() const { return "r" == s_; }
   inline bool ServerKnows() const {
@@ skipping 31 matching lines @@
   // computing lower bounds on std::sets that are ordered by operator<.
   static Id GetLeastIdForLexicographicComparison();
 
   // Gets root ID.
   static Id GetRoot();
 
  private:
   friend std::unique_ptr<EntryKernel> UnpackEntry(sql::Statement* statement,
                                                   int* total_created_entries);
   friend void BindFields(const EntryKernel& entry, sql::Statement* statement);
-  SYNC_EXPORT friend std::ostream& operator<<(std::ostream& out, const Id& id);
+  friend std::ostream& operator<<(std::ostream& out, const Id& id);
   friend class SyncableIdTest;
 
   std::string s_;
 };
 
 }  // namespace syncable
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_SYNCABLE_SYNCABLE_ID_H_