When user renames 'prefix' in 'prefix.Class' she actually wants to rename ImportElement.

pkg/analysis_server/lib/src/services/correction/util.dart

Index: pkg/analysis_server/lib/src/services/correction/util.dart
diff --git a/pkg/analysis_server/lib/src/services/correction/util.dart b/pkg/analysis_server/lib/src/services/correction/util.dart
index 7647691b60d6b62c2686d724bd21ee6733433794..b42bbe60fbb79407b0cb433404468ea071cb2306 100644
--- a/pkg/analysis_server/lib/src/services/correction/util.dart
+++ b/pkg/analysis_server/lib/src/services/correction/util.dart
@@ -97,35 +97,6 @@ ExecutableElement getEnclosingExecutableElement(AstNode node) {
 }
 
 /**
- * Returns a namespace of the given [ExportElement].
- */
-Map<String, Element> getExportNamespaceForDirective(ExportElement exp) {
-  Namespace namespace =
-      new NamespaceBuilder().createExportNamespaceForDirective(exp);
-  return namespace.definedNames;
-}
-
-
-/**
- * Returns a export namespace of the given [LibraryElement].
- */
-Map<String, Element> getExportNamespaceForLibrary(LibraryElement library) {
-  Namespace namespace =
-      new NamespaceBuilder().createExportNamespaceForLibrary(library);
-  return namespace.definedNames;
-}
-
-/**
- * Returns an [Element] exported from the given [LibraryElement].
- */
-Element getExportedElement(LibraryElement library, String name) {
-  if (library == null) {
-    return null;
-  }
-  return getExportNamespaceForLibrary(library)[name];
-}
-
-/**
  * Returns [getExpressionPrecedence] for the parent of [node],
  * or `0` if the parent node is [ParenthesizedExpression].
  *