Fixing up some APIs to allow Web DB to work from dart and adding tests.

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.
 
 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
 measurement_test: Pass, Fail  # Issue 1940
 
 [ $runtime == drt ]
 xhr_cross_origin_test: Skip  # Issue 4502: Passes with --allow-external-pages.
 
 [ $compiler == none && ($runtime == drt || $runtime == dartium) ]
 request_animation_frame_test: Skip   # drt hangs; requestAnimationFrame not implemented
+websql_test: Skip #4645 dartium does not support web SQL (and times out executing)
 
 [ $compiler == none && $runtime == drt && $system == windows]
 audiocontext_test: Skip
 
 [ $compiler == dart2js && $runtime == drt && $system == windows]
 audiocontext_test: Fail # Issue 4517
 audioelement_test: Fail # Issue 4517
 blob_constructor_test: Fail # Issue 4517
 css_test: Fail # Issue 4517
 htmlaudioelement_test: Fail # Issue 4517
@@ skipping 24 matching lines @@
 typed_arrays_5_test: Skip
 typed_arrays_arraybuffer_test: Skip
 typed_arrays_dataview_test: Skip
 typed_arrays_range_checks_test: Fail
 cssstyledeclaration_test: Fail
 element_test: Fail
 localstorage_test: Fail
 node_test: Fail
 svgelement_test: Fail
 svgelement2_test: Fail
+websql_test: Fail # IE does not support web SQL
 #
 # Investigate and triage the following into bug reports.
 #
 audiocontext_test: Fail
 blob_constructor_test: Fail
 cache_test: Fail
 callbacks_test: Fail
 canvas_test: Fail
 canvas_using_html_test: Fail
 css_test: Fail
@@ skipping 63 matching lines @@
 svgelement2_test: Fail
 transferables_test: Fail   # Issue 3392.
 typed_arrays_dataview_test: Fail  # DataView not implemented until Firefox 15.0
 # document.getElementsByTagName('body') returns an HTMLCollection, not a NodeList.
 #   TODO: Make both implement List<Node>, make implementation return List<Node>, not _NodeListJs.
 # Note this test now passes for the wrong reasons. It used to be that the only
 # forEach in this program was in NodeList. Due to dependencies from the unittest
 # framework, frog no longer resolves forEach statically, and instead it
 # dynamically binds forEach on a bunch of classes, including HTMLCollection.
 typing_test: Pass
+websql_test: Fail # FF does not support web SQL
 websocket_test: Pass, Fail # FF 10 is uses MozWebSocket, FF 11 uses WebSocket.
 # Exception... "Access to restricted URI denied" code: "1012" nsresult: "0x805303f4
 #    (NS_ERROR_DOM_BAD_URI) ...
 xhr_test: Fail
 
 [ $runtime == ie && ($system == linux || $system == macos) ]
 *: Skip
 
 [ $runtime == safari && ($system == linux || $system == windows) ]
 *: Skip
@@ skipping 56 matching lines @@
 
 [ $compiler == dart2js && $runtime == chrome && $system == windows]
 css_test: Pass, Fail # Issue #2823
 fileapi_test: Skip # Issue 3022
 
 [ $compiler == dart2js && $runtime == ff && $system == windows]
 js_interop_2_test: Fail # Issue 4658.
 
 [ $compiler == dart2js && $runtime == drt && $system == macos ]
 indexeddb_2_test: Fail # Issue 3669.