Fast path Location.hash as some apps call it 10000+ times a frame.

tools/dom/scripts/generate_blink_file.py

 #!/usr/bin/python
 #
 # 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.
 
 """Generates sdk/lib/_blink/dartium/_blink_dartium.dart file."""
 
 import os
 from sets import Set
@@ skipping 22 matching lines @@
     'Node.parentNode',
     'Node.childNodes',
     'Node.removeChild',
     'Node.contains',
     'Node.nextSibling',
     'Node.previousSibling',
     'ChildNode.remove',
     'Document.createTextNode',
     'Window.location',
     'Location.href',
+    'Location.hash',
     'Node.querySelector',
 
     'HTMLElement.hidden',
     'HTMLElement.style',
     'Element.attributes',
     'Window.innerWidth',
 
     'NodeList.length',
     'NodeList.item',
     'ParentNode.children',
@@ skipping 502 matching lines @@
     else:
       arguments = []
       for i in range(0, callback_index):
         arguments.append(ARGUMENT_NUM % i)
       argument_list = ', '.join(arguments)
       if operation.is_static:
         class_property = CLASS_STATIC % interface.id
         blink_file.write(Select_Stub(STATIC_OPERATION_ARGS, is_native) % (name, callback_index, argument_list, class_property, interface.id, name, argument_list))
       else:
         blink_file.write(Select_Stub(OPERATION_ARGS, is_native) % (name, callback_index, argument_list, interface.id, name, argument_list))