Fix data() method and add unit test.

I wrote code that called SkAutoTArray::data() and discovered that it
was broken, but not generating compile errors because it's part of a
template and never instantiated anywhere else. I fixed the
implementation and added it to our container unit test to prevent later
regression. This revealed another issue, that "containers in
SkTemplates.h [should] all have a consistent api", according to
test_container_apis. However, data() was never added to the non-array
container APIs. So I added data() to the other containers as well.

Change-Id: I52532c91fdab3fc8c4539053ba8420815b7b0ee5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/323276
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2 files changed