[Sync] Introduce GmsCoreSyncListener.

sync/test/fake_server/fake_server.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 SYNC_TEST_FAKE_SERVER_FAKE_SERVER_H_
 #define SYNC_TEST_FAKE_SERVER_FAKE_SERVER_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 128 matching lines @@
   // Returns the entity ID of the Bookmark Bar folder.
   std::string GetBookmarkBarFolderId() const;
 
   // Returns the current FakeServer as a WeakPtr.
   base::WeakPtr<FakeServer> AsWeakPtr();
 
  private:
   typedef base::ScopedPtrMap<std::string, scoped_ptr<FakeServerEntity>>
       EntityMap;
 
+  // Gets FakeServer ready for syncing.
+  void Init();
+
   // Processes a GetUpdates call.
   bool HandleGetUpdatesRequest(const sync_pb::GetUpdatesMessage& get_updates,
                                sync_pb::GetUpdatesResponse* response);
 
   // Processes a Commit call.
   bool HandleCommitRequest(const sync_pb::CommitMessage& message,
                            const std::string& invalidator_client_id,
                            sync_pb::CommitResponse* response);
 
   // Creates and saves a permanent folder for Bookmarks (e.g., Bookmark Bar).
@@ skipping 89 matching lines @@
   base::ThreadChecker thread_checker_;
 
   // Creates WeakPtr versions of the current FakeServer. This must be the last
   // data member!
   base::WeakPtrFactory<FakeServer> weak_ptr_factory_;
 };
 
 }  // namespace fake_server
 
 #endif  // SYNC_TEST_FAKE_SERVER_FAKE_SERVER_H_