Add an #ifndef to modp_b64_data.h to avoid a typedef conflict that certain...

third_party/modp_b64/modp_b64_data.h

Index: third_party/modp_b64/modp_b64_data.h
===================================================================
--- third_party/modp_b64/modp_b64_data.h	(revision 54936)
+++ third_party/modp_b64/modp_b64_data.h	(working copy)
@@ -1,6 +1,14 @@
+#include "build/build_config.h"
+#if !defined(COMPILER_MSVC)
+#include <stdint.h>
+#else
+// VC8 doesn't have stdint.h.  On the other hand, some compilers don't like
+// the below code, because basictypes.h itself includes stdint.h and the
+// typedefs below can cause conflicts.
 #include "base/basictypes.h"
 typedef uint8 uint8_t;
 typedef uint32 uint32_t;
+#endif
 
 #define CHAR62 '+'
 #define CHAR63 '/'