Merge 90185 - 2011-06-30 John Bates <jbates@google.com>

Merge 90185 - 2011-06-30  John Bates  <jbates@google.com>;

        Reviewed by James Robinson.

        Chromium bug: Compositing on a lost context causes latch deadlocks.
        The cause of deadlock was that a setLatch command is added to the lost
        compositor GL context, and a waitLatch would never complete on a child context.
        This change checks whether the compositor context is in error state before
        doing the compositing.
        https://bugs.webkit.org/show_bug.cgi?id=63681

        * src/WebViewImpl.cpp:
        (WebKit::WebViewImpl::composite):

TBR=commit-queue@webkit.org
BUG=87996
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=90511