Revert "rls: use acceptResolvedAddresses() (#9569)"

This reverts commit 3b62fbe3657097e2191b918619c5bed4fd23bfcc.
diff --git a/rls/src/main/java/io/grpc/rls/RlsLoadBalancer.java b/rls/src/main/java/io/grpc/rls/RlsLoadBalancer.java
index ea795a4..2aac96c 100644
--- a/rls/src/main/java/io/grpc/rls/RlsLoadBalancer.java
+++ b/rls/src/main/java/io/grpc/rls/RlsLoadBalancer.java
@@ -49,16 +49,8 @@
   }
 
   @Override
-  public boolean acceptResolvedAddresses(ResolvedAddresses resolvedAddresses) {
+  public void handleResolvedAddresses(ResolvedAddresses resolvedAddresses) {
     logger.log(ChannelLogLevel.DEBUG, "Received resolution result: {0}", resolvedAddresses);
-
-    if (resolvedAddresses.getAddresses().isEmpty()) {
-      handleNameResolutionError(Status.UNAVAILABLE.withDescription(
-          "NameResolver returned no usable address. addrs=" + resolvedAddresses.getAddresses()
-              + ", attrs=" + resolvedAddresses.getAttributes()));
-      return false;
-    }
-
     LbPolicyConfiguration lbPolicyConfiguration =
         (LbPolicyConfiguration) resolvedAddresses.getLoadBalancingPolicyConfig();
     checkNotNull(lbPolicyConfiguration, "Missing rls lb config");
@@ -86,8 +78,6 @@
       //  not required.
       this.lbPolicyConfiguration = lbPolicyConfiguration;
     }
-
-    return true;
   }
 
   @Override
diff --git a/rls/src/test/java/io/grpc/rls/RlsLoadBalancerTest.java b/rls/src/test/java/io/grpc/rls/RlsLoadBalancerTest.java
index 9f95200..b469ee6 100644
--- a/rls/src/test/java/io/grpc/rls/RlsLoadBalancerTest.java
+++ b/rls/src/test/java/io/grpc/rls/RlsLoadBalancerTest.java
@@ -445,7 +445,7 @@
     ConfigOrError parsedConfigOrError =
         provider.parseLoadBalancingPolicyConfig(getServiceConfig());
     assertThat(parsedConfigOrError.getConfig()).isNotNull();
-    rlsLb.acceptResolvedAddresses(ResolvedAddresses.newBuilder()
+    rlsLb.handleResolvedAddresses(ResolvedAddresses.newBuilder()
         .setAddresses(ImmutableList.of(new EquivalentAddressGroup(mock(SocketAddress.class))))
         .setLoadBalancingPolicyConfig(parsedConfigOrError.getConfig())
         .build());