Reapply webkitRequestAimationFrame->requestAnimationFrame with fix for dartium

tests/html/html.status

 # 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.
 
 window_open_test: Fail, Pass # http://dartbug.com/5151
 
 event_test: Skip  # Issue 1996
 webgl_1_test: Skip  # Issue 1495
 xmldocument_test: Skip  # XML in dart:html is incomplete
 xmlelement_test: Skip  # XML in dart:html is incomplete
@@ skipping 75 matching lines @@
 history_test: Fail
 indexeddb_1_test: Fail
 indexeddb_2_test: Fail
 indexeddb_3_test: Fail
 indexeddb_4_test: Fail
 js_interop_2_test: Fail
 js_interop_3_test: Fail
 js_interop_4_test: Fail
 messageevent_test: Fail
 mutationobserver_test: Fail
+request_animation_frame_test: Fail
 serialized_script_value_test: Fail

[Emily Fortuna, 2012/09/25 01:14:01]

callbacks_test fails in IE, which also uses requestAnimationFrame. It's unclear
to me why this was appearing to pass in IE to begin with. @sra, you wrote the
test -- do you have any insight why this was even passing before? Now it's
throwing a NSME, like callbacks_test, which is what I'd expect...

[blois, 2012/09/25 17:52:28]

This is failing because the implementation is now calling
webkitRequestAnimationFrame rather than requestAnimationFrame (see my comment
there).

This test should be passing, as well as callbacks_test.

Note that callbacks_test will timeout on drt since RAF doesn't callback there.

 shadow_dom_layout_test: Fail
 shadow_dom_test: Fail
 storage_test: Fail
 svg_3_test: Fail
 url_test: Fail              # IE9 does not support createObjectURL (it is supported in IE10)
 websocket_test: Fail
 window_open_test: Skip      # BUG(4016)
 xsltprocessor_test: Skip    # BUG(4016)
 isolates_test: Skip         # BUG(4016)
 xhr_test: Skip              # BUG(4016)
@@ skipping 88 matching lines @@
 [ $compiler == dart2js && $runtime == chrome && $system == windows]
 css_test: Pass, Fail # Issue #2823
 
 [ $compiler == dart2js && $runtime == ff && $system == windows]
 js_interop_2_test: Fail # Issue 4658.
 
 [ $compiler == dart2js && $checked && $browser]
 fileapi_test: Fail # TypeError: Object #<DirectoryEntry> has no method 'get$name'
 cross_frame_test: Fail # Caught NoSuchMethodError : method not found: 'is$_WindowImpl'
 window_open_test: Fail # Caught NoSuchMethodError : method not found: 'is$_WindowImpl'