Remove support for the old Span classes from source_maps.

pkg/source_maps/lib/refactor.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /// Tools to help implement refactoring like transformations to Dart code.
 ///
 /// [TextEditTransaction] supports making a series of changes to a text buffer.
 /// [guessIndent] helps to guess the appropriate indentiation for the new code.
 library source_maps.refactor;
 
-import 'span.dart';
+import 'package:source_span/source_span.dart';
+
 import 'printer.dart';
-import 'src/span_wrapper.dart';
 
 /// Editable text transaction.
 ///
 /// Applies a series of edits using original location
 /// information, and composes them into the edited string.
 class TextEditTransaction {
   final SourceFile file;
   final String original;
   final _edits = <_TextEdit>[];
 
   /// Creates a new transaction.
-  ///
-  /// [file] can be either a `source_map` [SourceFile] or a `source_span`
-  /// `SourceFile`. Using a `source_map` [SourceFile] is deprecated and will be
-  /// unsupported in version 0.10.0.
-  TextEditTransaction(this.original, file)
-      : file = SourceFileWrapper.wrap(file);
+  TextEditTransaction(this.original, this.file);
 
   bool get hasEdits => _edits.length > 0;
 
   /// Edit the original text, replacing text on the range [begin] and [end]
   /// with the [replacement]. [replacement] can be either a string or a
   /// [NestedPrinter].
   void edit(int begin, int end, replacement) {
     _edits.add(new _TextEdit(begin, end, replacement));
   }
 
-  /// Create a source map [Location] for [offset].
-  Location _loc(int offset) =>
+  /// Create a source map [SourceLocation] for [offset].
+  SourceLocation _loc(int offset) =>
       file != null ? file.location(offset) : null;
 
   /// Applies all pending [edit]s and returns a [NestedPrinter] containing the
   /// rewritten string and source map information. [filename] is given to the
   /// underlying printer to indicate the name of the generated file that will
   /// contains the source map information.
   /// 
   /// Throws [UnsupportedError] if the edits were overlapping. If no edits were
   /// made, the printer simply contains the original string.
   NestedPrinter commit() {
     var printer = new NestedPrinter();
     if (_edits.length == 0) {
       return printer..add(original, location: _loc(0), isOriginal: true);
     }
 
     // Sort edits by start location.
     _edits.sort();
 
     int consumed = 0;
     for (var edit in _edits) {
       if (consumed > edit.begin) {
         var sb = new StringBuffer();
-        sb..write(file.location(edit.begin).formatString)
+        sb..write(file.location(edit.begin).toolString)
             ..write(': overlapping edits. Insert at offset ')
             ..write(edit.begin)
             ..write(' but have consumed ')
             ..write(consumed)
             ..write(' input characters. List of edits:');
         for (var e in _edits) sb..write('\n    ')..write(e);
         throw new UnsupportedError(sb.toString());
       }
 
       // Add characters from the original string between this edit and the last
@@ skipping 53 matching lines @@
     }
   }
 
   return code.substring(lineStart, whitespaceEnd);
 }
 
 const int _CR = 13;
 const int _LF = 10;
 const int _TAB = 9;
 const int _SPACE = 32;