Add build/build_config.h in capture_memory.cc

Change-Id: I486e7bcdb205de5b24846a8e782a6163c2ce8829
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/5531439
Commit-Queue: Arthur Wang <wuwang@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
diff --git a/snapshot/capture_memory.cc b/snapshot/capture_memory.cc
index fea9347..f2ff5d7 100644
--- a/snapshot/capture_memory.cc
+++ b/snapshot/capture_memory.cc
@@ -25,6 +25,7 @@
 
 #include "base/containers/heap_array.h"
 #include "base/logging.h"
+#include "build/build_config.h"
 #include "snapshot/memory_snapshot.h"
 
 namespace crashpad {