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

webrtc/base/macasyncsocket.cc

Index: webrtc/base/macasyncsocket.cc
diff --git a/webrtc/base/macasyncsocket.cc b/webrtc/base/macasyncsocket.cc
index ee982ffff1aeae6b6c46c8326b5085eb6fce0886..1f12500b7316f3d5bcbbe19b01fddaf74aa605f4 100644
--- a/webrtc/base/macasyncsocket.cc
+++ b/webrtc/base/macasyncsocket.cc
@@ -276,7 +276,7 @@ int MacAsyncSocket::Close() {
   return 0;
 }
 
-int MacAsyncSocket::EstimateMTU(uint16* mtu) {
+int MacAsyncSocket::EstimateMTU(uint16_t* mtu) {
   ASSERT(false && "NYI");
   return -1;
 }