Fix a bug that current time can go backwards when playing a video

content/renderer/media/android/webmediaplayer_android.cc

Index: content/renderer/media/android/webmediaplayer_android.cc
diff --git a/content/renderer/media/android/webmediaplayer_android.cc b/content/renderer/media/android/webmediaplayer_android.cc
index 81a8d6a9619923274d07e3a3664f42c4c49fb8ae..6f92c21f5293926c66afc0f568ebc778b2d89503 100644
--- a/content/renderer/media/android/webmediaplayer_android.cc
+++ b/content/renderer/media/android/webmediaplayer_android.cc
@@ -917,6 +917,10 @@ void WebMediaPlayerAndroid::OnVideoSizeChanged(int width, int height) {
 void WebMediaPlayerAndroid::OnTimeUpdate(base::TimeDelta current_timestamp,
                                          base::TimeTicks current_time_ticks) {
   DCHECK(main_thread_checker_.CalledOnValidThread());
+
+  if (seeking())
+    return;
+
   // Compensate the current_timestamp with the IPC latency.
   base::TimeDelta lower_bound =
       base::TimeTicks::Now() - current_time_ticks + current_timestamp;
@@ -930,7 +934,9 @@ void WebMediaPlayerAndroid::OnTimeUpdate(base::TimeDelta current_timestamp,
   // if the lower_bound is smaller than the current time, just use the current
   // time so that the timer is always progressing.
   lower_bound =
-      std::min(lower_bound, base::TimeDelta::FromSecondsD(currentTime()));
+      std::max(lower_bound, base::TimeDelta::FromSecondsD(currentTime()));
+  if (lower_bound > upper_bound)
+    upper_bound = lower_bound;
   interpolator_.SetBounds(lower_bound, upper_bound);
 }