[BlackBerry] Enable non-video element enter/exit fullscreen.
https://bugs.webkit.org/show_bug.cgi?id=108314

Reviewed by Antonio Gomes.

Webkit support non-video element (like div) to enter/exit
fullscreen. We should pass this capability in blackberry porting.

RIM PR 256370, internally reviewed by Max Feil.

* Api/WebPage.cpp:
(BlackBerry::WebKit::WebPagePrivate::WebPagePrivate):
(BlackBerry::WebKit::WebPagePrivate::clearDocumentData):
(BlackBerry::WebKit::WebPagePrivate::setViewportSize):
(BlackBerry::WebKit::WebPage::notifyFullScreenVideoExited):
(BlackBerry::WebKit::WebPagePrivate::enterFullscreenForNode):
(BlackBerry::WebKit::WebPagePrivate::exitFullscreenForNode):
(WebKit):
(BlackBerry::WebKit::WebPagePrivate::enterFullScreenForElement):
(BlackBerry::WebKit::WebPagePrivate::exitFullScreenForElement):
(BlackBerry::WebKit::WebPagePrivate::adjustFullScreenElementDimensionsIfNeeded):
* Api/WebPage_p.h:
(WebPagePrivate):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@142220 268f45cc-cd09-0410-ab3c-d52691b4dbfc