Update web-page-replay to the latest commit

telemetry/third_party/web-page-replay/script_injector.py

Index: telemetry/third_party/web-page-replay/script_injector.py
diff --git a/telemetry/third_party/web-page-replay/script_injector.py b/telemetry/third_party/web-page-replay/script_injector.py
index 8f272e6bf3b0831ad1e96a292cef8f1decbde66f..d8452337b4a3078a218bdfd240ed2cf74d88dd50 100644
--- a/telemetry/third_party/web-page-replay/script_injector.py
+++ b/telemetry/third_party/web-page-replay/script_injector.py
@@ -53,8 +53,9 @@ def GetScriptInjector(scripts):
 
   script_template = jsmin.jsmin(''.join(lines), quote_chars="'\"`")
   def injector(record_time):
-    js_timestamp = int((record_time - datetime.datetime(1970, 1, 1))
-                       .total_seconds()) * 1000
+    delta = record_time - datetime.datetime(1970, 1, 1)
+    js_timestamp = \
+        int(delta.total_seconds()) * 1000 + delta.microseconds / 1000
     return script_template.replace(TIME_SEED_MARKER, str(js_timestamp))
   return injector