Use StringView for String::append and ::insert.

third_party/WebKit/Source/core/css/CSSPrimitiveValue.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2012 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 540 matching lines @@
         return CSSPrimitiveValue::UnitType::ViewportMin;
     case UnitTypeViewportMax:
         return CSSPrimitiveValue::UnitType::ViewportMax;
     case LengthUnitTypeCount:
         break;
     }
     ASSERT_NOT_REACHED();
     return CSSPrimitiveValue::UnitType::Unknown;
 }
 
-static String formatNumber(double number, const char* suffix, unsigned suffixLength)
+static String formatNumber(double number, const StringView& suffix)
 {
 #if OS(WIN) && _MSC_VER < 1900
     unsigned oldFormat = _set_output_format(_TWO_DIGIT_EXPONENT);
 #endif
     String result = String::format("%.6g", number);
 #if OS(WIN) && _MSC_VER < 1900
     _set_output_format(oldFormat);
 #endif
-    result.append(suffix, suffixLength);
+    result.append(suffix);
     return result;
 }
 
-template <unsigned characterCount>
-ALWAYS_INLINE static String formatNumber(double number, const char (&characters)[characterCount])
-{
-    return formatNumber(number, characters, characterCount - 1);
-}
-
-static String formatNumber(double number, const char* characters)
-{
-    return formatNumber(number, characters, strlen(characters));
-}
-
 const char* CSSPrimitiveValue::unitTypeToString(UnitType type)
 {
     switch (type) {
     case UnitType::Number:
     case UnitType::Integer:
     case UnitType::UserUnits:
         return "";
     case UnitType::Percentage:
         return "%";
     case UnitType::Ems:
@@ skipping 188 matching lines @@
     case UnitType::Calc:
         visitor->trace(m_value.calc);
         break;
     default:
         break;
     }
     CSSValue::traceAfterDispatch(visitor);
 }
 
 } // namespace blink