Remove FilterRelation.In / "property IN" queries, upgrade googleapis{,_beta} dependencies

test/datastore/e2e/datastore_test_impl.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library datastore_test;
 
 /// NOTE: In order to run these tests, the following datastore indices must
 /// exist:
 /// $ cat index.yaml
 /// indexes:
@@ skipping 719 matching lines @@
       var sortedAndFiltered = sorted.where(filterFunction).toList();
       var sortedAndListFiltered = sorted.where(listFilterFunction).toList();
       var indexedEntity = sorted.where(indexFilterMatches).toList();
       expect(indexedEntity.length, equals(1));
 
       var filters = [
           new Filter(FilterRelation.GreatherThan, QUERY_KEY, QUERY_LOWER_BOUND),
           new Filter(FilterRelation.LessThan, QUERY_KEY, QUERY_UPPER_BOUND),
       ];
       var listFilters = [
-          new Filter(FilterRelation.In, TEST_LIST_PROPERTY, [QUERY_LIST_ENTRY])
+          new Filter(FilterRelation.Equal, TEST_LIST_PROPERTY, QUERY_LIST_ENTRY)
       ];
       var indexedPropertyFilter = [
         new Filter(FilterRelation.Equal,
                    TEST_INDEXED_PROPERTY,
                    QUERY_INDEX_VALUE),
         new Filter(FilterRelation.Equal,
                    TEST_BLOB_INDEXED_PROPERTY,
                    TEST_BLOB_INDEXED_VALUE)
       ];
       var unIndexedPropertyFilter = [
@@ skipping 361 matching lines @@
 main() {
   var scopes = datastore_impl.DatastoreImpl.SCOPES;
 
   withAuthClient(scopes, (String project, httpClient) {
     var datastore = new datastore_impl.DatastoreImpl(httpClient, 's~$project');
     return cleanupDB(datastore, null).then((_) {
       return runE2EUnittest(() => runTests(datastore, null));
     });
   });
 }