Revert "Integrate the Irregexp Regular Expression Engine."

runtime/vm/unicode.h

Index: runtime/vm/unicode.h
diff --git a/runtime/vm/unicode.h b/runtime/vm/unicode.h
index e06f1f933f66ff333744d773456aa7d310a05937..fd7649c5e9558edaedde8a72755246f90de760ab 100644
--- a/runtime/vm/unicode.h
+++ b/runtime/vm/unicode.h
@@ -154,9 +154,9 @@ class Utf16 : AllStatic {
   // Encodes a single code point.
   static void Encode(int32_t codepoint, uint16_t* dst);
 
+ private:
   static const int32_t kMaxCodeUnit = 0xFFFF;
 
- private:
   static const int32_t kLeadSurrogateOffset = (0xD800 - (0x10000 >> 10));
 
   static const int32_t kSurrogateOffset = (0x10000 - (0xD800 << 10) - 0xDC00);