1) flag to verify PNGs produced by render_picture that produce the same pixels
as simple renderer.
2) flag to write one single image (in tile we write individual tiles) - this
will help running skdiff also
3) flag to clone the picture before rendering
git-svn-id: http://skia.googlecode.com/svn/trunk@6890 2bbb7eff-a529-9590-31e7-b0007b416f81
In TiledPictureRenderer and CopyTilesRenderer, do a postTranslate so
the translate is not affected by the scale factor.
Likewise, use clipRegion for tiled renderer so it will be
unaffected by the scale factor.
Respect the viewport for record, playbackCreation, and pipe renderers.
Review URL: https://codereview.appspot.com/6947072
git-svn-id: http://skia.googlecode.com/svn/trunk@6853 2bbb7eff-a529-9590-31e7-b0007b416f81
