Switch to standard integer types in components/, part 4 of 4.

BUG=138542
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Review URL: https://codereview.chromium.org/1549993003

Cr-Commit-Position: refs/heads/master@{#366870}
diff --git a/components/update_client/update_client_unittest.cc b/components/update_client/update_client_unittest.cc
index d8ad6df..d2194c4a 100644
--- a/components/update_client/update_client_unittest.cc
+++ b/components/update_client/update_client_unittest.cc
@@ -7,6 +7,7 @@
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/location.h"
+#include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"