SPIGOT-3553: Add OfflinePlayer based methods to SkullMeta

src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSkull.java

@@ -6,7 +6,9 @@ import net.minecraft.server.GameProfileSerializer;
 import net.minecraft.server.NBTBase;
 import net.minecraft.server.NBTTagCompound;
 
+import org.bukkit.Bukkit;
 import org.bukkit.Material;
+import org.bukkit.OfflinePlayer;
 import org.bukkit.configuration.serialization.DelegateDeserialization;
 import org.bukkit.craftbukkit.inventory.CraftMetaItem.SerializableMeta;
 import org.bukkit.craftbukkit.util.CraftMagicNumbers;
@@ -111,6 +113,21 @@ class CraftMetaSkull extends CraftMetaItem implements SkullMeta {
         return hasOwner() ? profile.getName() : null;
     }
 
+    @Override
+    public OfflinePlayer getOwningPlayer() {
+        if (hasOwner()) {
+            if (profile.getId() != null) {
+                return Bukkit.getOfflinePlayer(profile.getId());
+            }
+
+            if (profile.getName() != null) {
+                return Bukkit.getOfflinePlayer(profile.getName());
+            }
+        }
+
+        return null;
+    }
+
     public boolean setOwner(String name) {
         if (name != null && name.length() > MAX_OWNER_LENGTH) {
             return false;
@@ -125,6 +142,13 @@ class CraftMetaSkull extends CraftMetaItem implements SkullMeta {
         return true;
     }
 
+    @Override
+    public boolean setOwningPlayer(OfflinePlayer owner) {
+        profile = (owner == null) ? null : new GameProfile(owner.getUniqueId(), owner.getName());
+
+        return true;
+    }
+
     @Override
     int applyHash() {
         final int original;