Stop using the Hashable interface.

runtime/vm/scanner_test.cc

 // Copyright (c) 2012, 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.
 
 #include "platform/assert.h"
 #include "vm/os.h"
 #include "vm/scanner.h"
 #include "vm/token.h"
 #include "vm/unit_test.h"
 
@@ skipping 350 matching lines @@
       "  PolarPoint(Number theta, Number radius)"
       "      : theta(theta), radius(radius) { }"
       ""
       "  Number get x { return radius * Math.cos(theta); }"
       "  Number get y { return radius * Math.sin(theta); }"
       ""
       "  const Number theta;"
       "  const Number radius;"
       "}"
       ""
-      "interface Map<K extends Hashable,V> default HashMap<K, V> {"
+      "interface Map<K ,V> default HashMap<K, V> {"
       "  V operator [](K key);"
       "  void operator []=(K key, V value);"
       "  void forEach(function f(K key, V value));"
       "}"
       ""
       "class Foo {"
       "  static const Array kMyArray = [1,2,3,4,5,6];"
       "  static const Point kMyPoint = Point(1,2);"
       "}"
       ""
@@ skipping 58 matching lines @@
   RawString();
   MultilineString();
   EmptyString();
   EmptyMultilineString();
   NumberLiteral();
   InvalidText();
   FindLineTest();
 }
 
 }  // namespace dart