https://bugs.webkit.org/show_bug.cgi?id=113829

Reviewed by Carlos Garcia Campos.

Setting the visual viewport would force the layout viewport equal to
the visual viewport. Decouple the viewports by allowing the user to
specify a layout viewport when setting the viewport(s). The layout
viewport could be the exact same value passed for visual viewport, if
the old behavior is desired.

Also reevaluate any viewport arguments when (only) the layout viewport
changes in WebPage::setDefaultLayoutSize() since the layout viewport is
used as input to the calculation.

* Api/WebPage.cpp:
(BlackBerry::WebKit::WebPagePrivate::setScreenOrientation):
(BlackBerry::WebKit::WebPagePrivate::setViewportSize):
(BlackBerry::WebKit::WebPage::setViewportSize):
(WebKit):
(BlackBerry::WebKit::WebPagePrivate::setDefaultLayoutSize):
(BlackBerry::WebKit::WebPage::defaultLayoutSize):
* Api/WebPage.h:
* Api/WebPage_p.h:
(WebPagePrivate):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@147537 268f45cc-cd09-0410-ab3c-d52691b4dbfc