Fix GMs broken during API porting

Bugs:
morphology GM: Had swapped Erode and Dilate
imagefilterscropexpand GM: Was applying the filter to the wrong rectangle
imagefilterstransformed, filterfastbounds, et al GMs: The new
SkImageFilters::Image() factory had defaulted to using kNone for quality,
since it appeared to keep a 1-to-1 scale. However, it actually draws the
image from srcRect into the dstRect, mapped by the CTM, so if there's a
scaling factor in the CTM the filter no longer is 1-to-1 and kNone leads
to weird scaling artifacts. So switched back to the original kHigh default.
Change-Id: I30ee455008720048fb27eaed1c2c42915d222c97
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/232396
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
Auto-Submit: Michael Ludwig <michaelludwig@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
3 files changed