Rewritten PackageFragmentDescriptor to Kotlin.

compiler/builtins-serializer/src/ClassSerializationUtil.kt

@@ -52,7 +52,7 @@ public object ClassSerializationUtil {
     public fun getClassId(classDescriptor: ClassDescriptor): ClassId {
         val owner = classDescriptor.getContainingDeclaration()
         if (owner is PackageFragmentDescriptor) {
-            return ClassId(owner.getFqName(), FqNameUnsafe.topLevel(classDescriptor.getName()))
+            return ClassId(owner.fqName, FqNameUnsafe.topLevel(classDescriptor.getName()))
         }
         return getClassId(owner as ClassDescriptor).createNestedClassId(classDescriptor.getName())
     }

compiler/cli/src/org/jetbrains/jet/cli/jvm/compiler/CliSourcesMemberFilter.kt

@@ -30,7 +30,7 @@ public class CliSourcesMemberFilter(environment: JetCoreEnvironment): MemberFilt
     override fun acceptPackagePartClass(container: PackageFragmentDescriptor, member: ProtoBuf.Callable, nameResolver: NameResolver): Boolean {
         if (member.hasExtension(JavaProtoBuf.implClassName)) {
             val shortName = nameResolver.getName(member.getExtension(JavaProtoBuf.implClassName)!!)
-            val fqName = container.getFqName().child(shortName)
+            val fqName = container.fqName.child(shortName)
             val internalName = JvmClassName.byFqNameWithoutInnerClasses(fqName).getInternalName()
             return internalName !in packagePartClassNames
         }

compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/resolver/LazyResolveBasedCache.kt

@@ -58,7 +58,7 @@ public class LazyResolveBasedCache() : JavaResolverCache {
         return resolveSession.findInPackageFragments(fqName) { packageFragmentDescriptor ->
             ResolveSessionUtils.findByQualifiedName(
                     packageFragmentDescriptor.getMemberScope(),
-                    fqName.tail(packageFragmentDescriptor.getFqName()))
+                    fqName.tail(packageFragmentDescriptor.fqName))
         }
     }