Removing unnecessary save/restore in print code.

There is no need to save when we will do another before restoring.

This is not any kind of performance win because it only happens
while printing. Another potential problem is flagged with a comment
to prevent future confusion.

R=abarth@chromium.org, fmalita@chromium.org
BUG=334904

Review URL: https://codereview.chromium.org/137833017

git-svn-id: svn://svn.chromium.org/blink/trunk@166429 bbb929c8-8fbe-4397-9dbb-9b2b20218538