Use StringBuilder::appendLiteral() / StringBuilder::append(char) when possible

Source/platform/text/LocaleWin.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 286 matching lines @@
             commitLiteralToken(literalBuffer, converted);
             unsigned symbolStart = i;
             unsigned count = countContinuousLetters(format, i);
             i += count - 1;
             if (ch == 'h' || ch == 'H' || ch == 'm' || ch == 's' || ch == 'M' || ch == 'y') {
                 converted.append(format, symbolStart, count);
             } else if (ch == 'd') {
                 if (count <= 2)
                     converted.append(format, symbolStart, count);
                 else if (count == 3)
-                    converted.append("EEE");
+                    converted.appendLiteral("EEE");
                 else
-                    converted.append("EEEE");
+                    converted.appendLiteral("EEEE");
             } else if (ch == 'g') {
                 if (count == 1) {
                     converted.append('G');
                 } else {
                     // gg means imperial era in Windows.
                     // Just ignore it.
                 }
             } else if (ch == 't') {
                 converted.append('a');
             } else {
@@ skipping 125 matching lines @@
 String LocaleWin::shortTimeFormat()
 {
     if (!m_timeFormatWithoutSeconds.isNull())
         return m_timeFormatWithoutSeconds;
     String format = getLocaleInfoString(LOCALE_SSHORTTIME);
     // Vista or older Windows doesn't support LOCALE_SSHORTTIME.
     if (format.isEmpty()) {
         format = getLocaleInfoString(LOCALE_STIMEFORMAT);
         StringBuilder builder;
         builder.append(getLocaleInfoString(LOCALE_STIME));
-        builder.append("ss");
+        builder.appendLiteral("ss");
         size_t pos = format.reverseFind(builder.toString());
         if (pos != kNotFound)
             format.remove(pos, builder.length());
     }
     m_timeFormatWithoutSeconds = convertWindowsDateTimeFormat(format);
     return m_timeFormatWithoutSeconds;
 }
 
 String LocaleWin::dateTimeFormatWithSeconds()
 {
@@ skipping 111 matching lines @@
     case NegativeFormatSignPrefix: // Fall through.
     default:
         negativePrefix = negativeSign;
         break;
     }
     m_didInitializeNumberData = true;
     setLocaleData(symbols, emptyString(), emptyString(), negativePrefix, negativeSuffix);
 }
 
 }