Switch to AutoCloseable

Tweak javadoc. Don't throw on failure to close.

Bug: 269325540
Test: atest MicrodroidTests
Change-Id: I49f67dc5d7ab7fef84cc2ae0faa72014c4b3d76d
diff --git a/javalib/api/system-current.txt b/javalib/api/system-current.txt
index 3170d43..d9bafa1 100644
--- a/javalib/api/system-current.txt
+++ b/javalib/api/system-current.txt
@@ -85,8 +85,8 @@
     method @NonNull public android.system.virtualmachine.VirtualMachineConfig.Builder setVmOutputCaptured(boolean);
   }
 
-  public final class VirtualMachineDescriptor implements java.io.Closeable android.os.Parcelable {
-    method public void close() throws java.io.IOException;
+  public final class VirtualMachineDescriptor implements java.lang.AutoCloseable android.os.Parcelable {
+    method public void close();
     method public int describeContents();
     method public void writeToParcel(@NonNull android.os.Parcel, int);
     field @NonNull public static final android.os.Parcelable.Creator<android.system.virtualmachine.VirtualMachineDescriptor> CREATOR;