Reduce work a-like calls in SkTDArray

Three calls are removed:
top -> back
array -> data
push -> append

Change-Id: Ifa178b7f5a3f509ab9133af3b13bc27037255964
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/583957
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
19 files changed