feat(travis): Web platform features for Chrome 34
feat(platform): Make angular invoke web_component polyfills for browsers without native web_component implementations.
perf(NodeCursor): Do not duplicate child nodes
perf(selector): Remove an useless check
perf(tagging_view_factory): Move a test out of the loop
style: code cleanup
perf(_ElementSelector): Remove recursion in addDirective
docs(formatter): Fix a few typos
chore(travis): Fix Travis fetch for Dartium to handle redirects
chore(travis): Fix bad linebreak in previous commit
feat(Http): Http service can make cross-site requests (get, post, put, etc.) which use credentials (such as cookies or authorization headers).

Closes #945
feat(MockHttpBackend): Add support for withCredentials.

MockHttpBackend takes one more parameter, withCredentials. This is used to mimic withCredentials parameter from real HttpRequest.