Fix some bugs in our picture tools.

When doing tiled rendering in multiple threads, clone fPicture,
rather than the blank fPictureClones. Also fix a precedence
problem so we get the correct rectangle.

In render_pictures_main, call PictureRenderer::setup().

Review URL: https://codereview.appspot.com/6585055

git-svn-id: http://skia.googlecode.com/svn/trunk@5758 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed