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The change https://crrev.com/c/2368484 introduced bitmap limits while
deserializing the bitmap data in mojom transfer. This regressed large
bitmap transfers b/n the processes which used to work before
(Ex: Navigator.clipboard.write)

The limits were chosen arbitrarily to validate that the image isn't
incredibly large due to any programming error, but 32k is not a fair
limit. Increase the limit to 64k which can accommodate images from the
largest possible canvas(64k is the canvas max possible dimension)

Bug: 1142852
Change-Id: I7c6b32d8ac8549b9053178d477e7c7610add3f3f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2504012Reviewed-by: Greg Kerr <kerrnel@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Reviewed-by: Ken Rockot <rockot@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Akhila Veerapuraju <dhveerap@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#821750}