Remove ElementLocator.locateWithOffset altogether.

pkg/analysis_server/lib/src/computer/computer_hover.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.
 
 library computer.hover;
 
 import 'package:analysis_server/src/protocol.dart' show HoverInformation;
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
 
@@ skipping 65 matching lines @@
     }
     if (node.parent is ConstructorName &&
         node.parent.parent is InstanceCreationExpression) {
       node = node.parent.parent;
     }
     if (node is Expression) {
       Expression expression = node;
       HoverInformation hover =
           new HoverInformation(expression.offset, expression.length);
       // element
-      Element element = ElementLocator.locateWithOffset(expression, _offset);
+      Element element = ElementLocator.locate(expression);
       if (element != null) {
         // variable, if synthetic accessor
         if (element is PropertyAccessorElement) {
           PropertyAccessorElement accessor = element;
           if (accessor.isSynthetic) {
             element = accessor.variable;
           }
         }
         // description
         hover.elementDescription = element.toString();
@@ skipping 25 matching lines @@
       hover.propagatedType = _safeToString(expression.propagatedType);
       // done
       return hover;
     }
     // not an expression
     return null;
   }
 
   static _safeToString(obj) => obj != null ? obj.toString() : null;
 }