Prepare to make ImmutableSet.toImmutableSet available in guava-android (but don't do so yet).

android/guava-tests/test/com/google/common/collect/FauxveridesTest.java

@@ -61,10 +61,12 @@ public void testImmutableSortedMap() {
     doHasAllFauxveridesTest(ImmutableSortedMap.class, ImmutableMap.class);
   }
 
+  @AndroidIncompatible // similar to ImmutableTableTest.testNullPointerInstance
   public void testImmutableSortedSet() {
     doHasAllFauxveridesTest(ImmutableSortedSet.class, ImmutableSet.class);
   }
 
+  @AndroidIncompatible // similar to ImmutableTableTest.testNullPointerInstance
   public void testImmutableSortedMultiset() {
     doHasAllFauxveridesTest(ImmutableSortedMultiset.class, ImmutableMultiset.class);
   }

android/guava-tests/test/com/google/common/collect/ImmutableListTest.java

@@ -462,6 +462,7 @@ public void testToImmutableList_java7_combine() {
   // Basic tests
 
   @GwtIncompatible // NullPointerTester
+  @AndroidIncompatible // see ImmutableTableTest.testNullPointerInstance
   public void testNullPointers() {
     NullPointerTester tester = new NullPointerTester();
     tester.testAllPublicStaticMethods(ImmutableList.class);

android/guava-tests/test/com/google/common/collect/ImmutableMultisetTest.java

@@ -471,6 +471,7 @@ public void testBuilderSetCountIllegal() {
   }
 
   @GwtIncompatible // NullPointerTester
+  @AndroidIncompatible // see ImmutableTableTest.testNullPointerInstance
   public void testNullPointers() {
     NullPointerTester tester = new NullPointerTester();
     tester.testAllPublicStaticMethods(ImmutableMultiset.class);

android/guava-tests/test/com/google/common/collect/ImmutableSortedMultisetTest.java

@@ -431,6 +431,7 @@ public void testBuilderSetCountIllegal() {
     assertThrows(IllegalArgumentException.class, () -> builder.setCount("a", -2));
   }
 
+  @AndroidIncompatible // see ImmutableTableTest.testNullPointerInstance
   public void testNullPointers() {
     new NullPointerTester().testAllPublicStaticMethods(ImmutableSortedMultiset.class);
   }

android/guava-tests/test/com/google/common/collect/ImmutableSortedSetTest.java

@@ -230,6 +230,7 @@ protected <E extends Comparable<? super E>> SortedSet<E> copyOf(Iterator<? exten
   }
 
   @GwtIncompatible // NullPointerTester
+  @AndroidIncompatible // see ImmutableTableTest.testNullPointerInstance
   public void testNullPointers() {
     new NullPointerTester().testAllPublicStaticMethods(ImmutableSortedSet.class);
   }

android/guava-tests/test/com/google/common/collect/IterablesTest.java

@@ -1396,6 +1396,7 @@ public void testMergeSorted_skipping_pyramid() {
   }
 
   @GwtIncompatible // reflection
+  @AndroidIncompatible // see ImmutableTableTest.testNullPointerInstance
   public void testIterables_nullCheck() throws Exception {
     new ClassSanityTester()
         .forAllPublicStaticMethods(Iterables.class)