https://bugs.webkit.org/show_bug.cgi?id=87598

Patch by Arvid Nilsson <anilsson@rim.com> on 2012-05-28
Reviewed by Rob Buis.

There will likely be compositing layers either due to web content or
due to overlays.

Defer initialization of OpenGL objects (i.e., delay creation of the
LayerRenderer object) until we actually need to draw and there are such
layers, to avoid initializing OpenGL in the unlikely case that there
are no compositing layers or overlay layers.

PR #156811

* Api/WebPage.cpp:
(BlackBerry::WebKit::WebPagePrivate::init):
(BlackBerry::WebKit::WebPagePrivate::createCompositor):
* Api/WebPageCompositor.cpp:
(BlackBerry::WebKit::WebPageCompositorPrivate::setContext):
(BlackBerry::WebKit::WebPageCompositorPrivate::prepareFrame):
(BlackBerry::WebKit::WebPageCompositorPrivate::render):
(BlackBerry::WebKit::WebPageCompositorPrivate::drawLayers):
* Api/WebPageCompositor_p.h:
(WebPageCompositorPrivate):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@118704 268f45cc-cd09-0410-ab3c-d52691b4dbfc