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This is causing more memory to be used in some cases because
of this skia bug: https://bugs.chromium.org/p/skia/issues/detail?id=11038

48MB is enough to avoid that problem.

Bug: 1155326
Change-Id: Ife884162d29ca4f1a46caaeb9aa0188c3fe44eb4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2573156Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: Emircan Uysaler <emircan@chromium.org>
Commit-Queue: David Reveman <reveman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#833596}