Include-what-you-use related to logging.h (courgette)

Add direct includes for things provided transitively by logging.h
(or by other headers including logging.h).

This is in preparation for cleaning up unnecessary includes of
logging.h in header files (so if something depends on logging.h,
it needs include it explicitly), and for when logging.h no longer
includes check.h, check_op.h, and notreached.h.

Bug: 1031540
Change-Id: I0e8ccb83f217a2c7861373b2a967a3eb49922dbf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2249759
Auto-Submit: Hans Wennborg <hans@chromium.org>
Commit-Queue: Samuel Huang <huangs@chromium.org>
Reviewed-by: Samuel Huang <huangs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#779400}

courgette/label_manager.cc

@@ -9,6 +9,8 @@
 
 #include <algorithm>
 
+#include "base/check.h"
+#include "base/check_op.h"
 #include "base/logging.h"
 #include "base/numerics/safe_conversions.h"
 #include "base/numerics/safe_math.h"

courgette/rel32_finder_unittest.cc

@@ -11,6 +11,7 @@
 #include <string>
 
 #include "base/macros.h"
+#include "base/notreached.h"
 #include "courgette/base_test_unittest.h"
 #include "courgette/image_utils.h"
 #include "courgette/rel32_finder_x64.h"