Use suffixed {uint,int}{8,16,32,64}_t types.

webrtc/base/faketaskrunner.h

 /*
  *  Copyright 2011 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 // A fake TaskRunner for use in unit tests.
 
 #ifndef WEBRTC_BASE_FAKETASKRUNNER_H_
 #define WEBRTC_BASE_FAKETASKRUNNER_H_
 
 #include "webrtc/base/taskparent.h"
 #include "webrtc/base/taskrunner.h"
 
 namespace rtc {
 
 class FakeTaskRunner : public TaskRunner {
  public:
   FakeTaskRunner() : current_time_(0) {}
   virtual ~FakeTaskRunner() {}
 
   virtual void WakeTasks() { RunTasks(); }
 
-  virtual int64 CurrentTime() {
+  virtual int64_t CurrentTime() {
     // Implement if needed.
     return current_time_++;
   }
 
-  int64 current_time_;
+  int64_t current_time_;
 };
 
 }  // namespace rtc
 
 #endif  // WEBRTC_BASE_FAKETASKRUNNER_H_