Properly clip the view background with slimming paint
Properly clip the view background with slimming paint

We sadly break out of our renderer bounds when drawing the document
renderer's background. Avoid improperly clipping in that case.

R=chrishtr@chromium.org,pdr@chromium.org

Review URL: https://codereview.chromium.org/650233004

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@184019 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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