https://bugs.webkit.org/show_bug.cgi?id=95020

Reviewed by Rob Buis.
Patch by Antonio Gomes <agomes@rim.com>

'In-region start scrolling node' is an obsolete concept, and we can remove it
in favor of using the information from the cached layers.

* Api/InRegionScroller.cpp:
(WebKit):
(BlackBerry::WebKit::InRegionScrollerPrivate::reset): Adjusted as it used to clear
the cached 'node'.
(BlackBerry::WebKit::InRegionScrollerPrivate::isActive): Added method to be
checked directly instead of only null-checking the previously cached 'node'.
(BlackBerry::WebKit::InRegionScrollerPrivate::clearDocumentData): New method to
clear the cached resources if its document is done.
(BlackBerry::WebKit::InRegionScrollerPrivate::pushBackInRegionScrollable): Adjusted
to not care about the cached 'node' anymore.
* Api/InRegionScroller_p.h:
(InRegionScrollerPrivate):
* Api/WebPage.cpp:
(BlackBerry::WebKit::WebPagePrivate::notifyInRegionScrollStopped): Check ::isActive instead
of ::hasNode, since the later is gone.
(BlackBerry::WebKit::WebPagePrivate::enqueueRenderingOfClippedContentOfScrollableAreaAfterInRegionScrolling):
Changed the method signature, given that we do have a cached 'node' to pass in as parameter anymore.
(BlackBerry::WebKit::WebPagePrivate::clearDocumentData): Delegate all the related work to InRegionScroller.
* Api/WebPage_p.h:
(WebPagePrivate):
* WebKitSupport/TouchEventHandler.cpp:
(BlackBerry::WebKit::TouchEventHandler::drawTapHighlight):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@126768 268f45cc-cd09-0410-ab3c-d52691b4dbfc