Merge "Fixed an assertion error in GrAAConvexTessellator. While adding a new point, it would check that the new point was not a duplicate of the previous point. It would then drop the previous point if it was in the middle of a straight line, and proceed to add the new point." into master-skia

https://skia.googlesource.com/skia/+/1bcbc8f8c0747691496d779055675bc47ca65c86

Change-Id: I55db8bfffbd3273146e59c355deb67027e95868e