Remove unnecessary parameter

After fix for https://bugs.webkit.org/show_bug.cgi?id=99870
clampedAbsoluteTileBoundaries is not used outside
RenderSVGResourcePattern::createTileImage.

Review URL: https://codereview.chromium.org/290733009

git-svn-id: svn://svn.chromium.org/blink/trunk@174564 bbb929c8-8fbe-4397-9dbb-9b2b20218538