Add missing includes of //base/check.h in //base

Bug: 1300573
Change-Id: Id5db66943f4491756604c002ff049efb89460b7f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3585516
Reviewed-by: Lei Zhang <[email protected]>
Commit-Queue: Lei Zhang <[email protected]>
Owners-Override: Lei Zhang <[email protected]>
Cr-Commit-Position: refs/heads/main@{#992669}
diff --git a/base/scoped_observation.h b/base/scoped_observation.h
index 305c99c..58c3c2c 100644
--- a/base/scoped_observation.h
+++ b/base/scoped_observation.h
@@ -7,6 +7,7 @@
 
 #include <stddef.h>
 
+#include "base/check.h"
 #include "base/check_op.h"
 
 namespace base {