Automated commit: libchrome r1324117 uprev

Merge with upstream commit 71f9b1af1e1def56e97bb415cae7647e565736c8

- Update long-term patch to partially revert
e558947377db0b8e4f66687fd3c272ab6c34963e (upstream change
https://crrev.com/c/5582550).  This only reverts the change in
allocator_shim_default_dispatch_to_glibc.cc to replace
GlibcUncheckedRealloc with GlibcRealloc (similar how the original
patch replaced GlibcUncheckedMalloc with GlibcMalloc).

BUG=None
TEST=sudo emerge libchrome

Change-Id: I349d4e9ba98ca225d761bba7f6a8f2cde4dd65d8
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/libchrome/+/5683222
Tested-by: Nathan Muggli <nmuggli@google.com>
Commit-Queue: Nathan Muggli <nmuggli@google.com>
Reviewed-by: Grace Cham <hscham@chromium.org>