Make base::IsUnicodeWhitespace('\0') return false.

base/strings/string_util.cc

Index: base/strings/string_util.cc
diff --git a/base/strings/string_util.cc b/base/strings/string_util.cc
index d7a1d54c72210afe3f7777a43ec4d2e5e374fd47..a978891d57e291e5f0bec9586bbe20b04d4bcf43 100644
--- a/base/strings/string_util.cc
+++ b/base/strings/string_util.cc
@@ -674,6 +674,15 @@ char HexDigitToInt(wchar_t c) {
   return 0;
 }
 
+bool IsUnicodeWhitespace(wchar_t c) {
+  // kWhitespaceWide is a NULL-terminated string
+  for (const wchar_t* cur = kWhitespaceWide; *cur; ++cur) {
+    if (*cur == c)
+      return true;
+  }
+  return false;
+}
+
 static const char* const kByteStringsUnlocalized[] = {
   " B",
   " kB",