Cleanup names of painting and repainting functions.

    Cleanup names of painting and repainting functions.

        Reviewed by Adam Roben.

        * DumpRenderTree/cg/PixelDumpSupportCG.cpp:
        (drawSelectionRect): was drawSelectionRectIntoContext.
        (dumpWebViewAsPixelsAndCompareWithExpected):
        * DumpRenderTree/cg/PixelDumpSupportCG.h:
        * DumpRenderTree/mac/PixelDumpSupportMac.mm:
        (paintWebView): was drawWebViewIntoContext.
        (repaintWebView): was repaintWithVerticalSweep and repaintWithHorizontalSweep.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@28047 268f45cc-cd09-0410-ab3c-d52691b4dbfc