Switch to standard integer types in chromeos/.

BUG=138542
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Review URL: https://codereview.chromium.org/1540803002

Cr-Commit-Position: refs/heads/master@{#366324}
diff --git a/chromeos/cert_loader.h b/chromeos/cert_loader.h
index 694ea31..a837e4d 100644
--- a/chromeos/cert_loader.h
+++ b/chromeos/cert_loader.h
@@ -8,8 +8,8 @@
 #include <string>
 #include <vector>
 
-#include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"