Switch to standard integer types in sync/.

sync/test/trackable_mock_invalidation.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_TRACKABLE_MOCK_INVALIDATION_H_
 #define SYNC_TEST_TRACKABLE_MOCK_INVALIDATION_H_
 
+#include <stdint.h>
+
 #include <string>
 
 #include "sync/test/mock_invalidation.h"
 
 namespace syncer {
 
 class MockInvalidationTracker;
 
 // A variant of MockInvalidation that supports acknowledgements.
 //
 // With the help of a MockInvalidationTracker, this can be used to test
 // sync's use of the Drop() and Acknowledge() methods.
 class TrackableMockInvalidation : public MockInvalidation {
  public:
   TrackableMockInvalidation(bool is_unknown_version,
-                            int64 version,
+                            int64_t version,
                             const std::string& payload,
                             MockInvalidationTracker* tracker,
                             int tracking_id);
   ~TrackableMockInvalidation() override;
 
   // Forwards notice of the acknowledgement of this invalidation to the
   // |tracker_|.
   void Acknowledge() override;
 
   // Forwards notice of the drop of this invalidation to the |tracker_|.
@@ skipping 13 matching lines @@
   //
   // This is necessary in part because invalidations may be short lived; the
   // invalidation may be deleted by the time we want to make assertions about
   // its state.
   int tracking_id_;
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_TEST_TRACKABLE_MOCK_INVALIDATION_H_