Remove LoadingCache casts

Change-Id: Id39c82f015d7b0d934485c70026fa362e21c83aa

src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/InMemoryCacheLoadingFromStoreImpl.java

diff --git a/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/InMemoryCacheLoadingFromStoreImpl.java b/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/InMemoryCacheLoadingFromStoreImpl.java
index d69be5b..ea11bba 100644
--- a/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/InMemoryCacheLoadingFromStoreImpl.java
+++ b/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/InMemoryCacheLoadingFromStoreImpl.java
@@ -14,7 +14,6 @@
 
 package com.googlesource.gerrit.modules.cache.chroniclemap;
 
-import com.google.common.cache.Cache;
 import com.google.common.cache.CacheStats;
 import com.google.common.cache.LoadingCache;
 import com.google.gerrit.common.Nullable;
@@ -22,7 +21,7 @@
 import java.util.concurrent.ExecutionException;
 
 class InMemoryCacheLoadingFromStoreImpl<K, V> implements InMemoryCache<K, V> {
-  private final Cache<K, TimedValue<V>> loadingFromStoreCache;
+  private final LoadingCache<K, TimedValue<V>> loadingFromStoreCache;
   private final boolean loadingFromSource;
 
   /**
@@ -65,7 +64,7 @@
     }
 
     if (loadingFromSource) {
-      return ((LoadingCache<K, TimedValue<V>>) loadingFromStoreCache).get(key);
+      return loadingFromStoreCache.get(key);
     }
 
     throw new UnsupportedOperationException(
@@ -75,7 +74,7 @@
   @Override
   public void refresh(K key) {
     if (loadingFromSource) {
-      ((LoadingCache<K, TimedValue<V>>) loadingFromStoreCache).refresh(key);
+      loadingFromStoreCache.refresh(key);
     }
   }