Migrate WTF::Vector::append() to ::push_back() in WTF::HexNumber

third_party/WebKit/Source/wtf/HexNumber.h

Index: third_party/WebKit/Source/wtf/HexNumber.h
diff --git a/third_party/WebKit/Source/wtf/HexNumber.h b/third_party/WebKit/Source/wtf/HexNumber.h
index 6956430bfd413474530f8fe4fd4f764f3f09d2c4..2f54e35949c8f86c4224a0c39aea04f96c686ef0 100644
--- a/third_party/WebKit/Source/wtf/HexNumber.h
+++ b/third_party/WebKit/Source/wtf/HexNumber.h
@@ -45,6 +45,15 @@ inline void appendByteAsHex(unsigned char byte,
   destination.append(hexDigits[byte & 0xF]);
 }
 
+template <>
+inline void appendByteAsHex<Vector<LChar>>(unsigned char byte,

[Yuta Kitamura, 2017/01/13 07:32:09]

Is just specializing for Vector<LChar> sufficient? It might be
worth considering to do Vector<T> partial specialization here
(with a templated class with a static member function), but I agree
that doing that could be overly complex.

+                                           Vector<LChar>& destination,
+                                           HexConversionMode mode) {
+  const LChar* hexDigits = Internal::hexDigitsForMode(mode);
+  destination.push_back(hexDigits[byte >> 4]);
+  destination.push_back(hexDigits[byte & 0xF]);
+}
+
 template <typename T>
 inline void appendUnsignedAsHex(unsigned number,
                                 T& destination,