Update from https://crrev.com/308331

base/strings/stringprintf.cc

Index: base/strings/stringprintf.cc
diff --git a/base/strings/stringprintf.cc b/base/strings/stringprintf.cc
index 3d024fa65aaae8f195148673a1d3baea2cb8af0f..f3a57b33e2721e8fea9080dc3bdd9f253a783af1 100644
--- a/base/strings/stringprintf.cc
+++ b/base/strings/stringprintf.cc
@@ -48,7 +48,7 @@ static void StringAppendVT(StringType* dst,
   typename StringType::value_type stack_buf[1024];
 
   va_list ap_copy;
-  GG_VA_COPY(ap_copy, ap);
+  va_copy(ap_copy, ap);
 
 #if !defined(OS_WIN)
   ScopedClearErrno clear_errno;
@@ -94,7 +94,7 @@ static void StringAppendVT(StringType* dst,
 
     // NOTE: You can only use a va_list once.  Since we're in a while loop, we
     // need to make a new copy each time so we don't use up the original.
-    GG_VA_COPY(ap_copy, ap);
+    va_copy(ap_copy, ap);
     result = vsnprintfT(&mem_buf[0], mem_length, format, ap_copy);
     va_end(ap_copy);