Roll mini_chromium to 0a9dc1c4feeabee38f81bcb5ff9c925697755c35
Roll mini_chromium to 0a9dc1c4feeabee38f81bcb5ff9c925697755c35

0a9dc1c4 Add base/memory/ptr_util.h for https://codereview.chromium.org/1911823002/
ec5d4571 Add base/bit_cast.h to follow https://codereview.chromium.org/399313006

Change-Id: I28ef61f8951c9fa64aaeb497ae11d0288a57111d
Reviewed-on: https://chromium-review.googlesource.com/340467
Reviewed-by: Robert Sesek <f55ad94e336f3a28322d0a25d280221ea9daf7a3@chromium.org>

atom/crashpad,chromium/crashpad,chromium/crashpad,atom/crashpad,chromium/crashpad,atom/crashpad