Update Dart's CustomElement to latest Polymer tests

Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/CustomElements.js

Merge pull request #61 from blois/enter_leave_view

Updating enterView/leaveView callbacks to apply only to primary document...
avoid using native implementation by default when document.webkitRegister is available. This is an outdated native implementation that is no longer spec compliant.


Updating enterView/leaveView callbacks to apply only to primary document.


Defer karma tests until after WebComponentsReady

Match mocha test runner timings

move MutationObserver definition to correct Firefox problem.


 - change entered/leftDocumentCallback to entered/leftViewCallback to match spec change  - update tests and make pass with native blink implementation


README: update lifecycle callback names


improve error message


Update CONTRIBUTING.md

Polymer/polymer#273
test: remove karma-ios-launcher


freshen tools


test: refactor karma conf, add safari/ios


Address same issue as PR 57. Android browser is not supported, but implemented fix since it's trivial.


Remove CustomElements.watchAllShadows. Platform repo now overrides createShadowRoot and handles this automatically. Fixes issue #24. Also fixes CustomElements build.


README: remove commmented section

Addresses https://github.com/Polymer/docs/issues/138
tweak doc generation settings


WCR must be async but use short async if available.


upgrade SideTable


fire WebComponentsReady event without delay


README: add "lifecycle" so people can easily find this section.


Fixup from feedback from pull request.


Moving to master tools branch.


Incorporating test from Blink with some tweaks to upgrade logic.


Merge branch 'master' into blink_tests


Wed Aug 21 17:33:49 PDT 2013


README: HTMLUnknownElement -> HTMLElement


Docs: remove <element> from readme


test: add karma-ie-launcher


test: add karma-ie-launcher


test: fix tests


test: add missing file


test: update grunt-karma


throw exception if `name` argument to document.register contains no dash (+test)

BUG=

[sigmund, 2013-09-13 19:41:14]

lgtm