RTCStatsCollector: timestamps updated.

webrtc/stats/rtcstats_objects.cc

Index: webrtc/stats/rtcstats_objects.cc
diff --git a/webrtc/stats/rtcstats_objects.cc b/webrtc/stats/rtcstats_objects.cc
index 1cfe85f0368b881cafd939a8e42b1e6d9600f2bd..46962f20b694cae0c34ccb765773d84c1bfed988 100644
--- a/webrtc/stats/rtcstats_objects.cc
+++ b/webrtc/stats/rtcstats_objects.cc
@@ -15,13 +15,13 @@ namespace webrtc {
 const char RTCPeerConnectionStats::kType[] = "peer-connection";
 
 RTCPeerConnectionStats::RTCPeerConnectionStats(
-    const std::string& id, double timestamp)
-    : RTCPeerConnectionStats(std::string(id), timestamp) {
+    const std::string& id, int64_t timestamp_us)
+    : RTCPeerConnectionStats(std::string(id), timestamp_us) {
 }
 
 RTCPeerConnectionStats::RTCPeerConnectionStats(
-    std::string&& id, double timestamp)
-    : RTCStats(std::move(id), timestamp),
+    std::string&& id, int64_t timestamp_us)
+    : RTCStats(std::move(id), timestamp_us),
       data_channels_opened("dataChannelsOpened"),
       data_channels_closed("dataChannelsClosed") {
 }