Add EAP fee to domain check flow

(Original from mmuller@: []
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=126911443

java/google/registry/pricing/TldSpecificLogicEngine.java

@@ -19,6 +19,7 @@ import static com.google.common.base.Preconditions.checkState;
 import static google.registry.pricing.PricingEngineProxy.getPricesForDomainName;
 import static google.registry.util.PreconditionsUtils.checkArgumentNotNull;
 
+import com.google.common.base.Optional;
 import com.google.common.collect.ImmutableList;
 
 import google.registry.model.ImmutableObject;
@@ -122,9 +123,7 @@ public final class TldSpecificLogicEngine {
   }
 
   /**
-   * Returns a new restore price for the pricer.
-   *
-   * <p>TODO: This probably needs to include the renew price.
+   * Returns a new restore price (including the renew price) for the pricer.
    *
    * <p>domain name, number of years and date must be defined before calling this.
    */
@@ -138,5 +137,12 @@ public final class TldSpecificLogicEngine {
             Fee.create(registry.getStandardRestoreCost().getAmount(), "restore")));
   }
 
+  /**
+   * Returns the fee class for a given domain and date.
+   */
+  public static Optional<String> getFeeClass(String domainName, DateTime date) {
+    return getPricesForDomainName(domainName, date).getFeeClass();
+  }
+
   // TODO(b/29089413): Add support for transfer prices once this is plumbed through the flows.
 }