Create include/check.h to use different headers for CHECK-macros.

A few months ago, Chrome OS libchrome has followed Chrome upstream, to
move CHECK-related macros to base/check.h and base/check_op.h.

An implicit include of base/check.h and base/check_op.h was added to
base/logging.h for short-term backward compatibility until all
CHECK-related usages have been migrated. We're planning to remove this
implicit include soon.

Android is still using older libchrome, and CHECK-related macros lives
in base/logging.h. Thus adding a wrapper header as include/check.h like
include/notreached.h.

include of <base/logging.h> is still kept, and not removed. Because,
base/logging.h is still implicitly included by base/check.h, and this CL
doesn't really look into usages of LOG(). Removing base/logging.h may
accidentally adds implicit usages via base/check.h. We will be removing
the implicit include in base/check.h later. It might be better to keep
base/logging.h and reinvestigate, and remove unnecessary base/logging.h
later to avoid unnecessary blocking items when reomving implicit include
from base/check.h.

Bug: 186486897
Tag: #floss
Test: FEATURES=test emerge-zork-floss floss
Change-Id: I6211d1c5d41623d9df8e7b48c90cf0ce6c64eb72