[Win] Enable WebVTT Regions on Windows.
https://bugs.webkit.org/show_bug.cgi?id=130680

Reviewed by Eric Carlson.

Source/WebCore:

* DerivedSources.cpp: Add new build components.
* WebCore.vcxproj/WebCore.vcxproj: Ditto.
* WebCore.vcxproj/WebCore.vcxproj.filters: Ditto.

WebKitLibraries:

* win/tools/vsprops/FeatureDefines.props: Turn on WEBVTT_REGIONS
* win/tools/vsprops/FeatureDefinesCairo.props: Ditto.

LayoutTests:

* platform/win/TestExpectations: Turn on WebVTT tests.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@166221 268f45cc-cd09-0410-ab3c-d52691b4dbfc
AX: hit-testing doesn't always work correctly with WK2
https://bugs.webkit.org/show_bug.cgi?id=130706

Reviewed by Simon Fraser.

Accessibility code was trying to do screenToRootView itself, and in
some cases with embedded WK2 views that did not work.

* WebProcess/WebPage/mac/WKAccessibilityWebPageObjectMac.mm:
(-[WKAccessibilityWebPageObject accessibilityHitTest:]):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@166224 268f45cc-cd09-0410-ab3c-d52691b4dbfc