[BlackBerry] browser video player fullscreen mode (portrait) - out of screen/focus - cannot navigate or use the buttons on the screen (PART II)
https://bugs.webkit.org/show_bug.cgi?id=88019

Reviewed by George Staikos.
Patch by Antonio Gomes <agomes@rim.com>

When an element goes fullscreen, its wrapper/container obeys all
BlackBerry specific fixed position customizations: we fixed
against Y, but not X. Then, in order to have the wrapper element
properly positioned when entering fullscreen mode, we
temporarily scroll x to 0.

The original x scroll position is restored when we leave
fullscreen.

* Api/WebPage.cpp:
(BlackBerry::WebKit::WebPagePrivate::WebPagePrivate):
(BlackBerry::WebKit::WebPagePrivate::enterFullScreenForElement):
(BlackBerry::WebKit::WebPagePrivate::exitFullScreenForElement):
* Api/WebPage_p.h:
(WebPagePrivate):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@119321 268f45cc-cd09-0410-ab3c-d52691b4dbfc