Merge 133011 - Calendar picker can flicker when opened from the suggestion picker

Merge 133011 - Calendar picker can flicker when opened from the suggestion picker
https://bugs.webkit.org/show_bug.cgi?id=100816

Reviewed by Kent Tamura.

Source/WebCore:

Calendar picker was opening before the hiding completed.

No new tests. Added test to date-suggestion-picker-key-operations.html.

* Resources/pagepopups/pickerCommon.js: Added didHide event.
* Resources/pagepopups/suggestionPicker.js:
(SuggestionPicker.prototype.selectEntry): Use didHide event so we don't open the calendar picker prematurely.
(SuggestionPicker._handleWindowDidHide): When the window finished hiding, open the calendar picker.

LayoutTests:

* fast/forms/resources/picker-common.js:
(openPicker): Fix mistake.
* platform/chromium-win/platform/chromium/fast/forms/suggestion-picker/date-suggestion-picker-key-operations-expected.txt:
* platform/chromium/fast/forms/suggestion-picker/date-suggestion-picker-key-operations-expected.txt:
* platform/chromium/fast/forms/suggestion-picker/date-suggestion-picker-key-operations.html: Test that didHide event fires after the entry was selected and before the calendar picker opened.


TBR=keishi@webkit.org
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=133257