Don't attempt to create a file for non-Dart imports.

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

Index: pkg/analysis_server/lib/src/services/correction/fix_internal.dart
diff --git a/pkg/analysis_server/lib/src/services/correction/fix_internal.dart b/pkg/analysis_server/lib/src/services/correction/fix_internal.dart
index 4a6b1f9fff3a5bc242b2be3ec54f0206cac89a70..eba635ff26ffc439c35e353eef55e1e949635319 100644
--- a/pkg/analysis_server/lib/src/services/correction/fix_internal.dart
+++ b/pkg/analysis_server/lib/src/services/correction/fix_internal.dart
@@ -1096,7 +1096,7 @@ class FixProcessor {
       Source source = importDirective.source;
       if (source != null) {
         String file = source.fullName;
-        if (isAbsolute(file)) {
+        if (isAbsolute(file) && AnalysisEngine.isDartFileName(file)) {
           String libName = _computeLibraryName(file);
           SourceEdit edit = new SourceEdit(0, 0, 'library $libName;$eol$eol');
           doSourceChange_addSourceEdit(change, context, source, edit);
@@ -2376,7 +2376,7 @@ class FixProcessor {
       if (relPathParts[0].toLowerCase() == 'lib') {
         relPathParts.removeAt(0);
       }
-      {
+      if (relPathParts.isNotEmpty) {
         String nameWithoutExt = pathContext.withoutExtension(relPathParts.last);
         relPathParts[relPathParts.length - 1] = nameWithoutExt;
       }