Add some raster pipeline perspective asserts

I meant to add these when removing the guard, but since we landed without
a guard, might as well do it now.

A couple of things exposed by these asserts:

1) we need to also catch perspective in local matrices

2) we need to disallow burst mode with perspective

Also tweak the predicate to hasPerspective() instead of explicit mask
check.

Change-Id: I099e5125fca52dccffca77c60fc800bbdf539b53
Reviewed-on: https://skia-review.googlesource.com/22483
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>

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