Introduce KotlinTypeFactory

core/descriptor.loader.java/src/org/jetbrains/kotlin/load/java/lazy/descriptors/LazyJavaClassDescriptor.kt

@@ -195,10 +195,7 @@ class LazyJavaClassDescriptor(
                 parameter -> TypeProjectionImpl(Variance.INVARIANT, parameter.defaultType)
             }
 
-            return KotlinTypeImpl.create(
-                    Annotations.EMPTY, classDescriptor,
-                    /* nullable =*/ false, parametersAsTypeProjections
-            )
+            return KotlinTypeFactory.simpleNotNullType(Annotations.EMPTY, classDescriptor, parametersAsTypeProjections)
         }
 
         private fun getPurelyImplementsFqNameFromAnnotation(): FqName? {

core/descriptor.loader.java/src/org/jetbrains/kotlin/load/java/lazy/types/RawType.kt

@@ -106,9 +106,8 @@ internal object RawSubstitution : TypeSubstitution() {
             val arguments = listOf(
                     TypeProjectionImpl(componentTypeProjection.projectionKind, eraseType(componentTypeProjection.type))
             )
-            return KotlinTypeImpl.create(
-                    type.annotations, type.constructor, type.isMarkedNullable, arguments,
-                    (type.constructor.declarationDescriptor as ClassDescriptor).getMemberScope(arguments)
+            return KotlinTypeFactory.simpleType(type.annotations, type.constructor, arguments,
+                                                type.isMarkedNullable, (type.constructor.declarationDescriptor as ClassDescriptor).getMemberScope(arguments)
             )
         }