Drop SkTextBlobs with > 2M glyphs.

This will guard against buffer overflows
for large text blobs.

Bug: chromium:1080481
Change-Id: I13a10869babfa149a70c2f4caebb3a1ae4452b77
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/291456
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Mike Reed <reed@google.com>
2 files changed