Fix HLS Timeline.isDynamic

- Also fix an issue that allowed blacklisting of all tracks,
due to incorrect index being used.
- Also fix an issue with track deselection for HLS.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=132882151

library/src/main/java/com/google/android/exoplayer2/source/hls/HlsMediaPeriod.java

@@ -163,7 +163,8 @@ import java.util.List;
           mayRetainStreamFlags, childStreams, streamResetFlags, !seenFirstTrackSelection);
       boolean wrapperEnabled = false;
       for (int j = 0; j < selections.length; j++) {
-        if (selectionChildIndices[j] == i) {
+        if (selectionChildIndices[j] == i
+            || (selectionChildIndices[j] == C.INDEX_UNSET && streamChildIndices[j] == i)) {
           streams[j] = childStreams[j];
           if (childStreams[j] != null) {
             wrapperEnabled = true;
@@ -291,7 +292,7 @@ import java.util.List;
     callback.onPrepared(this);
 
     // TODO[playlists]: Calculate the window.
-    Timeline timeline = new SinglePeriodTimeline(durationUs, !isLive);
+    Timeline timeline = new SinglePeriodTimeline(durationUs, durationUs, 0, 0, !isLive, isLive);
     sourceListener.onSourceInfoRefreshed(timeline, playlist);
   }
 

library/src/main/java/com/google/android/exoplayer2/trackselection/BaseTrackSelection.java

@@ -138,7 +138,7 @@ public abstract class BaseTrackSelection implements TrackSelection {
     long nowMs = SystemClock.elapsedRealtime();
     boolean canBlacklist = isBlacklisted(index, nowMs);
     for (int i = 0; i < length && !canBlacklist; i++) {
-      canBlacklist = i != index && !isBlacklisted(index, nowMs);
+      canBlacklist = i != index && !isBlacklisted(i, nowMs);
     }
     if (!canBlacklist) {
       return false;