Rename SkTDArray::count -> size

Rename all SkTDArray::count() calls to size(). Remove count().

Change-Id: Ibb241262d6533d7bc570505ee4baa1f16f3570f0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/586276
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Herb Derby <herb@google.com>
117 files changed