Fix and reenable checkbox in Polymer page set.

Fix and reenable checkbox in Polymer page set.

BUG=394756
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=287596

[tonyg, 2014-08-05 15:50:24]

lgtm

[commit-bot: I haz the power, 2014-08-05 15:51:25]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/wiltzius@chromium.org/437353002/1

[commit-bot: I haz the power, 2014-08-05 19:44:11]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  win_gpu on tryserver.chromium.gpu
(http://build.chromium.org/p/tryserver.chromium.gpu/builders/win_gpu/builds/42661)
  linux_chromium_rel_swarming on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  mac_chromium_compile_dbg on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_comp...)

[commit-bot: I haz the power, 2014-08-05 21:02:30]

Change committed as 287596

[tonyg, 2014-08-06 02:55:47]

A revert of this CL has been created in
https://codereview.chromium.org/443793002/ by tonyg@chromium.org.

The reason for reverting is: Fails on N5 (at least).

Unhandled exception while running
http://www.polymer-project.org/components/paper-elements/demo.html#paper-chec...

Traceback (most recent call last):
  _RunPage at tools/telemetry/telemetry/page/page_runner.py:533
    test.RunPage(page, page_state.tab, results)
  RunPage at tools/telemetry/telemetry/page/page_test.py:232
    self._RunMethod(page, self._action_name_to_run, action_runner)
  _RunMethod at tools/telemetry/telemetry/page/page_test.py:241
    run_method(action_runner)
  RunSmoothness at tools/perf/page_sets/polymer.py:124
    self.TouchEverything(action_runner)
  TouchEverything at tools/perf/page_sets/polymer.py:154
    self.DoActionOnWidgetType(action_runner, tappable_type, self.TapWidget)
  DoActionOnWidgetType at tools/perf/page_sets/polymer.py:169
    element_query + '.offsetParent != null'):
  EvaluateJavaScript at
tools/telemetry/telemetry/page/actions/action_runner.py:148
    return self._tab.EvaluateJavaScript(expression)
  EvaluateJavaScript at tools/telemetry/telemetry/core/web_contents.py:108
    expr, context_id=None, timeout=timeout)
  EvaluateJavaScriptInContext at
tools/telemetry/telemetry/core/web_contents.py:124
    expr, context_id=context_id, timeout=timeout)
  EvaluateJavaScript at
tools/telemetry/telemetry/core/backends/chrome/inspector_backend.py:176
    return self._runtime.Evaluate(expr, context_id, timeout)
  Evaluate at
tools/telemetry/telemetry/core/backends/chrome/inspector_runtime.py:46
    raise exceptions.EvaluateException(res['result']['result']['description'])
EvaluateException: TypeError: Cannot read property 'offsetParent' of undefined

Locals:
  context_id : None
  expr       :
'document.querySelector("sampler-scaffold").$.frame.contentDocument.querySelectorAll("body
paper-checkbox:not([disabled]):not([active]):not([checked])")[2].offsetParent !=
null'
  request    : {'params': {'returnByValue': True, 'expression':
'document.querySelector("sampler-scaffold").$.frame.contentDocument.querySelectorAll("body
paper-checkbox:not([disabled]):not([active]):not([checked])")[2].offsetParent !=
null'}, 'method': 'Runtime.evaluate', 'id': 173}
  res        : {u'id': 173, u'result': {u'wasThrown': True, u'exceptionDetails':
{u'url': u'', u'text': u"Uncaught TypeError: Cannot read property 'offsetParent'
of undefined", u'line': 1, u'column': 68}, u'result': {u'className':
u'TypeError', u'type': u'object', u'description': u"TypeError: Cannot read
property 'offsetParent' of undefined", u'objectId':
u'{"injectedScriptId":4,"id":1}'}}}
  timeout    : 90

http://chromegw/i/chromium.perf/builders/Android%20Nexus5%20Perf/builds/1213/....

[wiltzius, 2014-08-06 18:52:10]

So it turns out that the radio button's behavior is just unpredictable -- it
doesn't always animate. Daniel from the Polymer team confirms this, and says
that they're fixing it now and will release a new version within a couple days.

So let's leave this patch reverted, as it doesn't address the core issue, and
instead I'll post a new patch in a few days that updates the WPR to the latest
version of the site.