Switch to using an explicit ended signal instead of time comparison.

media/blink/webmediaplayer_impl.cc

Index: media/blink/webmediaplayer_impl.cc
diff --git a/media/blink/webmediaplayer_impl.cc b/media/blink/webmediaplayer_impl.cc
index fdb43c9b95f20f2f20306af96881bb45bbe2a27d..034ce359ee265224135ab45dc623f7d1818a4e5b 100644
--- a/media/blink/webmediaplayer_impl.cc
+++ b/media/blink/webmediaplayer_impl.cc
@@ -1104,7 +1104,7 @@ void WebMediaPlayerImpl::OnEnded() {
     return;
 
   ended_ = true;
-  client_->timeChanged();
+  client_->timeChanged(ended_);
 
   // We don't actually want this to run until |client_| calls seek() or pause(),
   // but that should have already happened in timeChanged() and so this is
@@ -1174,7 +1174,7 @@ void WebMediaPlayerImpl::OnBufferingStateChange(BufferingState state) {
 
     // Blink expects a timeChanged() in response to a seek().
     if (should_notify_time_changed_)
-      client_->timeChanged();
+      client_->timeChanged(ended_);
 
     // Once we have enough, start reporting the total memory usage. We'll also
     // report once playback starts.
@@ -1364,7 +1364,7 @@ void WebMediaPlayerImpl::OnRemotePlaybackEnded() {
   DCHECK(main_task_runner_->BelongsToCurrentThread());
 
   ended_ = true;
-  client_->timeChanged();
+  client_->timeChanged(ended_);
 }
 
 void WebMediaPlayerImpl::OnDisconnectedFromRemoteDevice(double t) {