[Sync] Rename csync namespace to syncer

sync/notifier/mock_invalidation_state_tracker.h

 // Copyright (c) 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 SYNC_NOTIFIER_MOCK_INVALIDATION_STATE_TRACKER_H_
 #define SYNC_NOTIFIER_MOCK_INVALIDATION_STATE_TRACKER_H_
 
 #include "base/memory/weak_ptr.h"
 #include "sync/notifier/invalidation_state_tracker.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
-namespace csync {
+namespace syncer {
 
 class MockInvalidationStateTracker
     : public InvalidationStateTracker,
       public base::SupportsWeakPtr<MockInvalidationStateTracker> {
  public:
   MockInvalidationStateTracker();
   virtual ~MockInvalidationStateTracker();
 
   MOCK_CONST_METHOD0(GetAllMaxVersions, InvalidationVersionMap());
   MOCK_METHOD2(SetMaxVersion, void(const invalidation::ObjectId&, int64));
   MOCK_CONST_METHOD0(GetInvalidationState, std::string());
   MOCK_METHOD1(SetInvalidationState, void(const std::string&));
 };
 
-}  // namespace csync
+}  // namespace syncer
 
 #endif  // SYNC_NOTIFIER_MOCK_INVALIDATION_STATE_TRACKER_H_