Switch to standard integer types in sync/.

sync/test/mock_invalidation_tracker.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_MOCK_INVALIDATION_TRACKER_H_
 #define SYNC_TEST_MOCK_INVALIDATION_TRACKER_H_
 
+#include <stdint.h>
+
 #include <set>
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "sync/test/trackable_mock_invalidation.h"
 
 namespace syncer {
 
 // Instantiates and track the acknowledgement state of
 // TrackableMockInvalidations.
 class MockInvalidationTracker {
  public:
   // Builers to return new TrackableMockInvalidations associated with this
   // object.
   scoped_ptr<TrackableMockInvalidation> IssueUnknownVersionInvalidation();
   scoped_ptr<TrackableMockInvalidation> IssueInvalidation(
-      int64 version,
+      int64_t version,
       const std::string& payload);
 
   MockInvalidationTracker();
   ~MockInvalidationTracker();
 
   // Records the acknowledgement of the invalidation
   // specified by the given ID.
   void Acknowledge(int invaliation_id);
 
   // Records the drop of the invalidation specified by the given ID.
@@ skipping 22 matching lines @@
   // acknowledged or dropped items to the proper set.  An invalidation may be
   // both dropped and acknowledged if it represents the recovery from a drop
   // event.
   std::set<int> dropped_;
   std::set<int> acknowledged_;
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_TEST_MOCK_INVALIDATION_TRACKER_H_