Add equal overloads to some MediaDescription and MediaQueue objects (2/3)

Bug: 64686424
Test: Connect to carkit and see that NowPlayingChanged only gets sent when
      the queue changes, run cts test
Change-Id: I58c9dd0bf976485a2efefd042cd667ee433e07e1
(cherry picked from commit 6edb68bea6)

media/java/android/media/MediaDescription.java

@@ -219,6 +219,33 @@ public class MediaDescription implements Parcelable {
         dest.writeParcelable(mMediaUri, flags);
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (o == null) {
+            return false;
+        }
+
+        if (!(o instanceof MediaDescription)){
+            return false;
+        }
+
+        final MediaDescription d = (MediaDescription) o;
+
+        if (!String.valueOf(mTitle).equals(String.valueOf(d.mTitle))) {
+            return false;
+        }
+
+        if (!String.valueOf(mSubtitle).equals(String.valueOf(d.mSubtitle))) {
+            return false;
+        }
+
+        if (!String.valueOf(mDescription).equals(String.valueOf(d.mDescription))) {
+            return false;
+        }
+
+        return true;
+    }
+
     @Override
     public String toString() {
         return mTitle + ", " + mSubtitle + ", " + mDescription;

media/java/android/media/session/MediaSession.java

@@ -48,6 +48,7 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.ref.WeakReference;
 import java.util.List;
+import java.util.Objects;
 
 /**
  * Allows interaction with media controllers, volume keys, media buttons, and
@@ -1256,6 +1257,28 @@ public final class MediaSession {
                     "Description=" + mDescription +
                     ", Id=" + mId + " }";
         }
+
+        @Override
+        public boolean equals(Object o) {
+            if (o == null) {
+                return false;
+            }
+
+            if (!(o instanceof QueueItem)) {
+                return false;
+            }
+
+            final QueueItem item = (QueueItem) o;
+            if (mId != item.mId) {
+                return false;
+            }
+
+            if (!Objects.equals(mDescription, item.mDescription)) {
+                return false;
+            }
+
+            return true;
+        }
     }
 
     private static final class Command {