Add template.cpp to gitignore.

It is generated experimental/webtry/build script, not checked-in the
source tree.

BUG=None
TEST=git status do not show it anymore as untracked file.
R=humper@google.com

Review URL: https://codereview.chromium.org/647633002
faster SkRect::sort

BUG=skia:

Review URL: https://codereview.chromium.org/646863002
Turn SkCanvasStateUtils into a class with static functions.

That simplifies the way to declare it a friend, as needed in SkCanvas.

BUG=skia:2914
TEST=make most
R=reed@google.com

Review URL: https://codereview.chromium.org/645773002