Remove LibraryElement.isUpToDate().

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

 // Copyright (c) 2014, 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.
 
 /**
  * Defines the element model. The element model describes the semantic (as
  * opposed to syntactic) structure of Dart code. The syntactic structure of the
  * code is modeled by the [AST structure](../ast/ast.dart).
  *
  * The element model consists of two closely related kinds of objects: elements
@@ skipping 1479 matching lines @@
    * Return a list containing all of the imports that share the given [prefix],
    * or an empty array if there are no such imports.
    */
   List<ImportElement> getImportsWithPrefix(PrefixElement prefix);
 
   /**
    * Return the class defined in this library that has the given [name], or
    * `null` if this library does not define a class with the given name.
    */
   ClassElement getType(String className);
-
-  /**
-   * Return `true` if this library is up to date with respect to the given
-   * [timeStamp]. If any transitively referenced Source is newer than the time
-   * stamp, this method returns false.
-   */
-  bool isUpToDate(int timeStamp);
 }
 
 /**
  * An element that can be (but is not required to be) defined within a method
  * or function (an [ExecutableElement]).
  *
  * Clients may not extend, implement or mix-in this class.
  */
 abstract class LocalElement implements Element {
   /**
@@ skipping 495 matching lines @@
   DartType get type;
 
   /**
    * Return a representation of the value of this variable, forcing the value
    * to be computed if it had not previously been computed, or `null` if either
    * this variable was not declared with the 'const' modifier or if the value of
    * this variable could not be computed because of errors.
    */
   DartObject computeConstantValue();
 }