Merge 140324

Merge 140324

> INPUT_MULTIPLE_FIELDS_UI: should not dispatch 'input' events if the element value is not updated
> https://bugs.webkit.org/show_bug.cgi?id=107429
> 
> Reviewed by Kentaro Hara.
> 
> Source/WebCore:
> 
> http://www.whatwg.org/specs/web-apps/current-work/multipage/common-input-element-attributes.html#common-event-behaviors
> > any time the user causes the element's value to change, the user agent
> > must queue a task to fire a simple event that bubbles named input at the
> > input element.
> 
> Tests:
> fast/forms/time-multiple-fields/time-multiple-fields-keyboard-event.html
> is updated to cover this change.
> 
> * html/BaseMultipleFieldsDateAndTimeInputType.cpp:
> (WebCore::BaseMultipleFieldsDateAndTimeInputType::editControlValueChanged):
> If the new value is equivalent to the old value, don't dispatch events.
> However we should recalculate validity and call notifyFormStateChanged
> because input.validity.badInput state might be changed.
> 
> LayoutTests:
> 
> * fast/forms/time-multiple-fields/time-multiple-fields-keyboard-events-expected.txt:
> * fast/forms/time-multiple-fields/time-multiple-fields-keyboard-events.html:
> 

TBR=tkent@chromium.org
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=140650