check matrix does not have rotation or perspective transformation

When checking whether we need apply AA to a rect for non-msaa target,
simply checking that the mapped rect is integer is not enough.
We need to check whether the transformation matrix has transformations
other than simple translation.

Original-Author: Henry Song <henrysong@samsung.com>

Review URL: https://codereview.chromium.org/772953002
work in progress

Review URL: https://codereview.chromium.org/769423002