xds: remove _experimental in wrr policy name (#10162)

Author: YifeiZhuang

xds/src/main/java/io/grpc/xds/WeightedRoundRobinLoadBalancerProvider.java

@@ -38,7 +38,7 @@ public final class WeightedRoundRobinLoadBalancerProvider extends LoadBalancerPr
   @VisibleForTesting
   static final long MIN_WEIGHT_UPDATE_PERIOD_NANOS = 100_000_000L; // 100ms
 
-  static final String SCHEME = "weighted_round_robin_experimental";
+  static final String SCHEME = "weighted_round_robin";
 
   @Override
   public LoadBalancer newLoadBalancer(Helper helper) {

xds/src/test/java/io/grpc/xds/LoadBalancerConfigFactoryTest.java

@@ -118,7 +118,7 @@ public class LoadBalancerConfigFactoryTest {
 
   private static final LbConfig VALID_WRR_CONFIG = new LbConfig("wrr_locality_experimental",
       ImmutableMap.of("childPolicy", ImmutableList.of(
-      ImmutableMap.of("weighted_round_robin_experimental",
+      ImmutableMap.of("weighted_round_robin",
       ImmutableMap.of("blackoutPeriod","287s", "enableOobLoadReport", true )))));
   private static final LbConfig VALID_RING_HASH_CONFIG = new LbConfig("ring_hash_experimental",
       ImmutableMap.of("minRingSize", (double) RING_HASH_MIN_RING_SIZE, "maxRingSize",

xds/src/test/java/io/grpc/xds/XdsClientImplDataTest.java

@@ -2037,7 +2037,7 @@ public void parseCluster_WrrLbPolicy_defaultLbConfig() throws ResourceInvalidExc
     assertThat(lbConfig.getPolicyName()).isEqualTo("wrr_locality_experimental");
     List<LbConfig> childConfigs = ServiceConfigUtil.unwrapLoadBalancingConfigList(
             JsonUtil.getListOfObjects(lbConfig.getRawConfigValue(), "childPolicy"));
-    assertThat(childConfigs.get(0).getPolicyName()).isEqualTo("weighted_round_robin_experimental");
+    assertThat(childConfigs.get(0).getPolicyName()).isEqualTo("weighted_round_robin");
     WeightedRoundRobinLoadBalancerConfig result = (WeightedRoundRobinLoadBalancerConfig)
         new WeightedRoundRobinLoadBalancerProvider().parseLoadBalancingPolicyConfig(
         childConfigs.get(0).getRawConfigValue()).getConfig();