Reviewed by Beth Dakin.

        Throw a SECURITY_ERR when accessing a tainted canvas
        by CanvasRenderingContext2D::getImageData() and
        HTMLCanvasElement::toDataURL().

        * html/CanvasRenderingContext2D.cpp:
        (WebCore::CanvasRenderingContext2D::getImageData):
        * html/CanvasRenderingContext2D.h:
        * html/CanvasRenderingContext2D.idl:
        * html/HTMLCanvasElement.cpp:
        (WebCore::HTMLCanvasElement::toDataURL):
        * html/HTMLCanvasElement.h:
        * html/HTMLCanvasElement.idl:

LayoutTests:

        Reviewed by Beth Dakin.

        Update test to catch the SECURITY_ERR thrown by
        CanvasRenderingContext2D::getImageData() and
        HTMLCanvasElement::toDataURL() on a tainted canvas

        * http/tests/security/canvas-remote-read-remote-image-expected.txt:
        * http/tests/security/canvas-remote-read-remote-image.html:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@30954 268f45cc-cd09-0410-ab3c-d52691b4dbfc