Switch to standard integer types in base/.

base/atomicops_internals_atomicword_compat.h

Index: base/atomicops_internals_atomicword_compat.h
diff --git a/base/atomicops_internals_atomicword_compat.h b/base/atomicops_internals_atomicword_compat.h
index 342a6e4592cfe8a1536206f63787e499b3d9c079..8b000d2571dba85d9d05d2e3c75f80e5a195030b 100644
--- a/base/atomicops_internals_atomicword_compat.h
+++ b/base/atomicops_internals_atomicword_compat.h
@@ -7,7 +7,11 @@
 #ifndef BASE_ATOMICOPS_INTERNALS_ATOMICWORD_COMPAT_H_
 #define BASE_ATOMICOPS_INTERNALS_ATOMICWORD_COMPAT_H_
 
-// AtomicWord is a synonym for intptr_t, and Atomic32 is a synonym for int32,
+#include <stdint.h>
+
+#include "build/build_config.h"
+
+// AtomicWord is a synonym for intptr_t, and Atomic32 is a synonym for int32_t,
 // which in turn means int. On some LP32 platforms, intptr_t is an int, but
 // on others, it's a long. When AtomicWord and Atomic32 are based on different
 // fundamental types, their pointers are incompatible.