diff --git a/mfbt/double-conversion/double-conversion/utils.h b/mfbt/double-conversion/double-conversion/utils.h
--- a/mfbt/double-conversion/double-conversion/utils.h
+++ b/mfbt/double-conversion/double-conversion/utils.h
@@ -93,34 +93,18 @@ inline void abort_noreturn() { abort(); 
 #endif
 
 #if defined(__GNUC__)
 #define DOUBLE_CONVERSION_UNUSED __attribute__((unused))
 #else
 #define DOUBLE_CONVERSION_UNUSED
 #endif
 
-#if defined(_WIN32) && !defined(__MINGW32__)
-
-typedef signed char int8_t;
-typedef unsigned char uint8_t;
-typedef short int16_t;  // NOLINT
-typedef unsigned short uint16_t;  // NOLINT
-typedef int int32_t;
-typedef unsigned int uint32_t;
-typedef __int64 int64_t;
-typedef unsigned __int64 uint64_t;
-// intptr_t and friends are defined in crtdefs.h through stdio.h.
-
-#else
-
 #include <stdint.h>
 
-#endif
-
 typedef uint16_t uc16;
 
 // The following macro works on both 32 and 64-bit platforms.
 // Usage: instead of writing 0x1234567890123456
 //      write UINT64_2PART_C(0x12345678,90123456);
 #define UINT64_2PART_C(a, b) (((static_cast<uint64_t>(a) << 32) + 0x##b##u))