Minor. DelegatingFlexibleType moved to top level

core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/java/lazy/types/LazyJavaTypeResolver.kt

@@ -260,16 +260,6 @@ class LazyJavaTypeResolver(
         override fun isNullable(): Boolean = _nullable()
     }
 
-    private open class DelegatingFlexibleType(
-            override val lowerBound: JetType,
-            override val upperBound: JetType
-    ) : DelegatingType(), FlexibleType {
-
-        override fun getDelegate() = lowerBound
-
-        override fun toString() = "('$lowerBound'..'$upperBound')"
-    }
-
     /*
      * For a java type like java.util.List<Foo>
      *     lowerBound = MutableList<Foo>

core/descriptors/src/org/jetbrains/jet/lang/types/flexibleTypes.kt

@@ -20,3 +20,13 @@ public trait FlexibleType : JetType {
     val lowerBound: JetType
     val upperBound: JetType
 }
+
+public open class DelegatingFlexibleType(
+        override val lowerBound: JetType,
+        override val upperBound: JetType
+) : DelegatingType(), FlexibleType {
+
+    override fun getDelegate() = lowerBound
+
+    override fun toString() = "('$lowerBound'..'$upperBound')"
+}