Get rid of all the library tags.

lib/src/eager_span_scanner.dart

 // Copyright (c) 2015, 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.
 
-library string_scanner.eager_span_scanner;
-
 import 'package:charcode/ascii.dart';
 
 import 'line_scanner.dart';
 import 'span_scanner.dart';
 
 // TODO(nweiz): Currently this duplicates code in line_scanner.dart. Once
 // sdk#23770 is fully complete, we should move the shared code into a mixin.
 
 /// A regular expression matching newlines across platforms.
 final _newlineRegExp = new RegExp(r"\r\n?|\n");
@@ skipping 89 matching lines @@
 /// A class representing the state of an [EagerSpanScanner].
 class _EagerSpanScannerState implements LineScannerState {
   final EagerSpanScanner _scanner;
   final int position;
   final int line;
   final int column;
 
   _EagerSpanScannerState(this._scanner, this.position, this.line, this.column);
 }