8267338: [JVMCI] revive JVMCI API removed by JDK-8243287

Reviewed-by: mchung, hseigel

src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.meta/src/jdk/vm/ci/meta/ResolvedJavaType.java

@@ -136,6 +136,15 @@ public interface ResolvedJavaType extends JavaType, ModifiersProvider, Annotated
      */
     boolean isAssignableFrom(ResolvedJavaType other);
 
+    /**
+     * Returns {@code null} since support for VM anonymous class was removed by JDK-8243287.
+     * This method is preserved for JVMCI backwards compatibility.
+     */
+    @Deprecated
+    default ResolvedJavaType getHostClass() {
+        return null;
+    }
+
     /**
      * Returns true if this type is exactly the type {@link java.lang.Object}.
      */

test/hotspot/jtreg/compiler/jvmci/jdk.vm.ci.runtime.test/src/jdk/vm/ci/runtime/test/TestResolvedJavaType.java

@@ -1116,6 +1116,7 @@ public class TestResolvedJavaType extends TypeUniverse {
         "isLinked",
         "getJavaClass",
         "getObjectHub",
+        "getHostClass",
         "hasFinalizableSubclass",
         "hasFinalizer",
         "isLocal",