Run rename-import tests with the new analysis driver.

pkg/analyzer/lib/src/dart/element/element.dart

Index: pkg/analyzer/lib/src/dart/element/element.dart
diff --git a/pkg/analyzer/lib/src/dart/element/element.dart b/pkg/analyzer/lib/src/dart/element/element.dart
index 4bfc3e97b9b01732ffb8405b18c99a3e46adbd49..218284d771af7661ac15332148ab4fc497e91f0a 100644
--- a/pkg/analyzer/lib/src/dart/element/element.dart
+++ b/pkg/analyzer/lib/src/dart/element/element.dart
@@ -4169,7 +4169,7 @@ class ExportElementImpl extends UriReferencedElementImpl
   @override
   void appendTo(StringBuffer buffer) {
     buffer.write("export ");
-    (exportedLibrary as LibraryElementImpl).appendTo(buffer);
+    LibraryElementImpl.getImpl(exportedLibrary).appendTo(buffer);
   }
 }
 
@@ -5126,7 +5126,7 @@ class ImportElementImpl extends UriReferencedElementImpl
   @override
   void appendTo(StringBuffer buffer) {
     buffer.write("import ");
-    (importedLibrary as LibraryElementImpl).appendTo(buffer);
+    LibraryElementImpl.getImpl(importedLibrary).appendTo(buffer);
   }
 
   @override
@@ -5937,6 +5937,16 @@ class LibraryElementImpl extends ElementImpl implements LibraryElement {
   }
 
   /**
+   * Return the [LibraryElementImpl] of the given [element].
+   */
+  static LibraryElementImpl getImpl(LibraryElement element) {
+    if (element is LibraryElementHandle) {
+      return getImpl(element.actualElement);
+    }
+    return element as LibraryElementImpl;
+  }
+
+  /**
    * Return `true` if the [library] has the given [capability].
    */
   static bool hasResolutionCapability(