Using 64-bit timestamp in webrtc/p2p

webrtc/base/timeutils.h

Index: webrtc/base/timeutils.h
diff --git a/webrtc/base/timeutils.h b/webrtc/base/timeutils.h
index 3ade43094708c92e02e075522a4da151b7712059..f0269b572fced331fc304d0773958fd838d68efc 100644
--- a/webrtc/base/timeutils.h
+++ b/webrtc/base/timeutils.h
@@ -34,8 +34,19 @@ static const int64_t kJan1970AsNtpMillisecs = INT64_C(2208988800000);
 
 typedef uint32_t TimeStamp;
 
+// Returns the current time in milliseconds in 32 bits.
+uint32_t Time32();
+
+// Returns the current time in milliseconds in 64 bits.
+int64_t Time64();
+
 // Returns the current time in milliseconds.
-uint32_t Time();
+// TODO(honghaiz): Returns Time64 once majority of the webrtc code migrates to
+// 64-bit timestamp.
+inline uint32_t Time() {
+  return Time32();
+}
+
 // Returns the current time in microseconds.
 uint64_t TimeMicros();
 // Returns the current time in nanoseconds.
@@ -68,6 +79,10 @@ inline uint32_t TimeMin(uint32_t ts1, uint32_t ts2) {
 // timestamps.  The value is negative if 'later' occurs before 'earlier'.
 int32_t TimeDiff(uint32_t later, uint32_t earlier);
 
+// Number of milliseconds that would elapse between 'earlier' and 'later'
+// timestamps.  The value is negative if 'later' occurs before 'earlier'.
+int64_t TimeDiff64(int64_t later, int64_t earlier);
+
 // The number of milliseconds that have elapsed since 'earlier'.
 inline int32_t TimeSince(uint32_t earlier) {
   return TimeDiff(Time(), earlier);