https://bugs.webkit.org/show_bug.cgi?id=98230

Reviewed by Kentaro Hara.

Share same difinitions in DateComponents.cpp and DateTimeFieldElements.cpp.

No new tests. This doesn't change any bahevior.

* platform/DateComponents.h:
(WebCore::DateComponents::minimumYear): Moved from DateComponents.cpp.
(WebCore::DateComponents::maximumYear): ditto.
* platform/DateComponents.cpp:
(WebCore): Move out static minimumYear and maximumYear.
(WebCore::DateComponents::parseYear): Use DateCompnents::minimumYear and/or maximumYear.
(WebCore::withinHTMLDateLimits): ditto.
(WebCore::DateComponents::parseWeek): ditto.
(WebCore::DateComponents::setMonthsSinceEpoch): ditto.
(WebCore::DateComponents::setMillisecondsSinceEpochForWeek): ditto.

* html/shadow/DateTimeFieldElements.cpp:
(WebCore): Remove minimumYear and maximumYear.
(WebCore::DateTimeYearFieldElement::DateTimeYearFieldElement):
Use DateComponents::minimumYear and maximumYear.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@130256 268f45cc-cd09-0410-ab3c-d52691b4dbfc