2011-02-04 Anders Carlsson <andersca@apple.com>

2011-02-04  Anders Carlsson  <andersca@apple.com>

        Reviewed by Dan Bernstein.

        Go out of accelerated compositing mode when the drawing area is destroyed
        https://bugs.webkit.org/show_bug.cgi?id=53788

        This fixes a crash in the UI process if a web process crashes while in accelerated compositing mode.

        * UIProcess/DrawingAreaProxyImpl.cpp:
        (WebKit::DrawingAreaProxyImpl::~DrawingAreaProxyImpl):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@77640 268f45cc-cd09-0410-ab3c-d52691b4dbfc