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

webrtc/base/ratetracker_unittest.cc

Index: webrtc/base/ratetracker_unittest.cc
diff --git a/webrtc/base/ratetracker_unittest.cc b/webrtc/base/ratetracker_unittest.cc
index 043f53718b0797e9bf5ccae8f35696bc1791970c..2187282cd3fd406b6118abe2c9a5bd09bda82cee 100644
--- a/webrtc/base/ratetracker_unittest.cc
+++ b/webrtc/base/ratetracker_unittest.cc
@@ -16,11 +16,11 @@ namespace rtc {
 class RateTrackerForTest : public RateTracker {
  public:
   RateTrackerForTest() : RateTracker(100u, 10u), time_(0) {}
-  virtual uint32 Time() const { return time_; }
-  void AdvanceTime(uint32 delta) { time_ += delta; }
+  virtual uint32_t Time() const { return time_; }
+  void AdvanceTime(uint32_t delta) { time_ += delta; }
 
  private:
-  uint32 time_;
+  uint32_t time_;
 };
 
 TEST(RateTrackerTest, Test30FPS) {