Rename rtc::Time64 --> rtc::TimeMillis.

webrtc/p2p/base/turnport_unittest.cc

Index: webrtc/p2p/base/turnport_unittest.cc
diff --git a/webrtc/p2p/base/turnport_unittest.cc b/webrtc/p2p/base/turnport_unittest.cc
index 2c93ead9dfacb701c042ab7cc85d594fa991de72..da21e5f4dd4969896911f66b2bd3a771730cc560 100644
--- a/webrtc/p2p/base/turnport_unittest.cc
+++ b/webrtc/p2p/base/turnport_unittest.cc
@@ -629,7 +629,7 @@ TEST_F(TurnPortTest, TestTurnAllocateNonceResetAfterAllocateMismatch) {
   // using timestamp |ts_before| but then get an allocate mismatch error and
   // receive an even newer nonce based on the system clock. |ts_before| is
   // chosen so that the two NONCEs generated by the server will be different.
-  int64_t ts_before = rtc::Time64() - 1;
+  int64_t ts_before = rtc::TimeMillis() - 1;
   std::string first_nonce =
       turn_server_.server()->SetTimestampForNextNonce(ts_before);
   turn_port_->PrepareAddress();