Issue 13783. Add file from missing import.

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 72f84cb00dabcf40cb69a2f2ff9e2a21276b5a5d..303d5f9dd19b1c61e4f449cc5c84956da62de163 100644
--- a/pkg/analysis_server/lib/src/services/correction/fix_internal.dart
+++ b/pkg/analysis_server/lib/src/services/correction/fix_internal.dart
@@ -131,6 +131,7 @@ class FixProcessor {
       _addFix_createConstructorSuperExplicit();
     }
     if (errorCode == CompileTimeErrorCode.URI_DOES_NOT_EXIST) {
+      _addFix_createImportUri();
       _addFix_replaceImportUri();
     }
     if (errorCode == HintCode.DIVISION_OPTIMIZATION) {
@@ -227,14 +228,14 @@ class FixProcessor {
     return fixes;
   }
 
-  void _addFix(FixKind kind, List args, {String fixFile}) {
+  void _addFix(FixKind kind, List args, {String fixFile, int fixFileStamp}) {
     if (fixFile == null) {
       fixFile = file;
+      fixFileStamp =
+          unitElement.context.getModificationStamp(unitElement.source);
     }
     // prepare SourceFileEdit
-    SourceFileEdit fileEdit = new SourceFileEdit(
-        file,
-        unitElement.context.getModificationStamp(unitElement.source));
+    SourceFileEdit fileEdit = new SourceFileEdit(fixFile, fixFileStamp);
     fileEdit.addAll(edits);
     // prepare Change
     String message = formatList(kind.message, args);
@@ -608,6 +609,22 @@ class FixProcessor {
     }
   }
 
+  void _addFix_createImportUri() {
+    if (node is SimpleStringLiteral && node.parent is ImportDirective) {
+      ImportDirective importDirective = node.parent;
+      Source source = importDirective.source;
+      if (source != null) {
+        String file = source.fullName;
+        if (isAbsolute(file)) {
+          String libName = removeEnd(source.shortName, '.dart');
+          libName = libName.replaceAll('_', '.');
+          edits.add(new SourceEdit(0, 0, 'library $libName;$eol$eol'));
+        }
+        _addFix(FixKind.CREATE_FILE, [file], fixFile: file, fixFileStamp: -1);
+      }
+    }
+  }
+
   void _addFix_createMissingOverrides(List<ExecutableElement> elements) {
     elements = elements.toList();
     int numElements = elements.length;