Make more private classes final.

Like cl/784189028 but for non-`static` classes.

RELNOTES=n/a
PiperOrigin-RevId: 784585587

Author: cpovirk

android/guava-testlib/src/com/google/common/collect/testing/testers/CollectionRetainAllTester.java

@@ -46,7 +46,7 @@
 public class CollectionRetainAllTester<E> extends AbstractCollectionTester<E> {
 
   /** A collection of elements to retain, along with a description for use in failure messages. */
-  private class Target {
+  private final class Target {
     private final Collection<E> toRetain;
     private final String description;
 

android/guava-testlib/src/com/google/common/testing/DummyProxy.java

@@ -82,7 +82,7 @@ final <T> T newProxy(TypeToken<T> interfaceType) {
   /** Returns the dummy return value for {@code returnType}. */
   abstract <R> @Nullable R dummyReturnValue(TypeToken<R> returnType);
 
-  private class DummyHandler extends AbstractInvocationHandler implements Serializable {
+  private final class DummyHandler extends AbstractInvocationHandler implements Serializable {
     private final TypeToken<?> interfaceType;
 
     DummyHandler(TypeToken<?> interfaceType) {

android/guava/src/com/google/common/collect/AbstractBiMap.java

@@ -212,7 +212,7 @@ public Set<K> keySet() {
   }
 
   @WeakOuter
-  private class KeySet extends ForwardingSet<K> {
+  private final class KeySet extends ForwardingSet<K> {
     @Override
     protected Set<K> delegate() {
       return delegate.keySet();
@@ -261,7 +261,7 @@ public Set<V> values() {
   }
 
   @WeakOuter
-  private class ValueSet extends ForwardingSet<V> {
+  private final class ValueSet extends ForwardingSet<V> {
     final Set<V> valuesDelegate = inverse.keySet();
 
     @Override
@@ -358,7 +358,7 @@ public void remove() {
   }
 
   @WeakOuter
-  private class EntrySet extends ForwardingSet<Entry<K, V>> {
+  private final class EntrySet extends ForwardingSet<Entry<K, V>> {
     final Set<Entry<K, V>> esDelegate = delegate.entrySet();
 
     @Override

android/guava/src/com/google/common/collect/AbstractMapBasedMultimap.java

@@ -853,7 +853,7 @@ public List<V> subList(int fromIndex, int toIndex) {
     }
 
     /** ListIterator decorator. */
-    private class WrappedListIterator extends WrappedIterator implements ListIterator<V> {
+    private final class WrappedListIterator extends WrappedIterator implements ListIterator<V> {
       WrappedListIterator() {}
 
       WrappedListIterator(int index) {
@@ -906,7 +906,7 @@ public void add(@ParametricNullness V value) {
    * List decorator that stays in sync with the multimap values for a key and supports rapid random
    * access.
    */
-  private class RandomAccessWrappedList extends WrappedList implements RandomAccess {
+  private final class RandomAccessWrappedList extends WrappedList implements RandomAccess {
     RandomAccessWrappedList(
         @ParametricNullness K key, List<V> delegate, @Nullable WrappedCollection ancestor) {
       super(key, delegate, ancestor);

android/guava/src/com/google/common/collect/ArrayTable.java

@@ -600,7 +600,7 @@ public C getColumnKey() {
     }
   }
 
-  private class Column extends ArrayMap<R, @Nullable V> {
+  private final class Column extends ArrayMap<R, @Nullable V> {
     final int columnIndex;
 
     Column(int columnIndex) {
@@ -644,7 +644,7 @@ public ImmutableSet<C> columnKeySet() {
   }
 
   @WeakOuter
-  private class ColumnMap extends ArrayMap<C, Map<R, @Nullable V>> {
+  private final class ColumnMap extends ArrayMap<C, Map<R, @Nullable V>> {
     private ColumnMap() {
       super(columnKeyToIndex);
     }
@@ -692,7 +692,7 @@ String getKeyRole() {
     }
   }
 
-  private class Row extends ArrayMap<C, @Nullable V> {
+  private final class Row extends ArrayMap<C, @Nullable V> {
     final int rowIndex;
 
     Row(int rowIndex) {
@@ -736,7 +736,7 @@ public ImmutableSet<R> rowKeySet() {
   }
 
   @WeakOuter
-  private class RowMap extends ArrayMap<R, Map<C, @Nullable V>> {
+  private final class RowMap extends ArrayMap<R, Map<C, @Nullable V>> {
     private RowMap() {
       super(rowKeyToIndex);
     }

android/guava/src/com/google/common/collect/ConcurrentHashMultiset.java

@@ -561,7 +561,7 @@ public void clear() {
   }
 
   @WeakOuter
-  private class EntrySet extends AbstractMultiset<E>.EntrySet {
+  private final class EntrySet extends AbstractMultiset<E>.EntrySet {
     @Override
     ConcurrentHashMultiset<E> multiset() {
       return ConcurrentHashMultiset.this;

android/guava/src/com/google/common/collect/LinkedListMultimap.java

@@ -297,7 +297,7 @@ private void removeAllNodes(@ParametricNullness K key) {
   }
 
   /** An {@code Iterator} over all nodes. */
-  private class NodeIterator implements ListIterator<Entry<K, V>> {
+  private final class NodeIterator implements ListIterator<Entry<K, V>> {
     int nextIndex;
     @Nullable Node<K, V> next;
     @Nullable Node<K, V> current;
@@ -408,7 +408,7 @@ void setValue(@ParametricNullness V value) {
   }
 
   /** An {@code Iterator} over distinct keys in key head order. */
-  private class DistinctKeyIterator implements Iterator<K> {
+  private final class DistinctKeyIterator implements Iterator<K> {
     final Set<K> seenKeys = Sets.<K>newHashSetWithExpectedSize(keySet().size());
     @Nullable Node<K, V> next = head;
     @Nullable Node<K, V> current;
@@ -452,7 +452,7 @@ public void remove() {
   }
 
   /** A {@code ListIterator} over values for a specified key. */
-  private class ValueForKeyIterator implements ListIterator<V> {
+  private final class ValueForKeyIterator implements ListIterator<V> {
     @ParametricNullness final K key;
     int nextIndex;
     @Nullable Node<K, V> next;

android/guava/src/com/google/common/collect/Maps.java

@@ -2917,7 +2917,7 @@ protected Set<Entry<K, V>> createEntrySet() {
     }
 
     @WeakOuter
-    private class EntrySet extends ForwardingSet<Entry<K, V>> {
+    private final class EntrySet extends ForwardingSet<Entry<K, V>> {
       @Override
       protected Set<Entry<K, V>> delegate() {
         return filteredEntrySet;

android/guava/src/com/google/common/collect/MinMaxPriorityQueue.java

@@ -767,7 +767,7 @@ private int getGrandparentIndex(int i) {
    *
    * <p>If the underlying queue is modified during iteration an exception will be thrown.
    */
-  private class QueueIterator implements Iterator<E> {
+  private final class QueueIterator implements Iterator<E> {
     private int cursor = -1;
     private int nextCursor = -1;
     private int expectedModCount = modCount;

android/guava/src/com/google/common/collect/StandardRowSortedTable.java

@@ -93,7 +93,7 @@ SortedMap<R, Map<C, V>> createRowMap() {
   }
 
   @WeakOuter
-  private class RowSortedMap extends RowMap implements SortedMap<R, Map<C, V>> {
+  private final class RowSortedMap extends RowMap implements SortedMap<R, Map<C, V>> {
     @Override
     public SortedSet<R> keySet() {
       return (SortedSet<R>) super.keySet();