Replace WTF::emptyString{16Bit}() with a static global

third_party/WebKit/Source/build/scripts/make_css_property_names.py

 #!/usr/bin/env python
 
 import subprocess
 import sys
 
 import css_properties
 import json5_generator
 import license
 
 
@@ skipping 138 matching lines @@
     // We share the StringImpl with the AtomicStrings.
     return getPropertyNameAtomicString(id).getString();
 }
 
 String getJSPropertyName(CSSPropertyID id)
 {
     char result[maxCSSPropertyNameLength + 1];
     const char* cssPropertyName = getPropertyName(id);
     const char* propertyNamePointer = cssPropertyName;
     if (!propertyNamePointer)
-        return emptyString();
+        return emptyString;
 
     char* resultPointer = result;
     while (char character = *propertyNamePointer++) {
         if (character == '-') {
             char nextCharacter = *propertyNamePointer++;
             if (!nextCharacter)
                 break;
             character = (propertyNamePointer - 2 != cssPropertyName) ? toASCIIUpper(nextCharacter) : nextCharacter;
         }
         *resultPointer++ = character;
@@ skipping 67 matching lines @@
         # CalledProcessError like subprocess would do when shell=True is set.
         try:
             gperf = subprocess.Popen(gperf_args, stdin=subprocess.PIPE, stdout=subprocess.PIPE, universal_newlines=True)
             return gperf.communicate(gperf_input)[0]
         except OSError:
             raise subprocess.CalledProcessError(127, gperf_args, output='Command not found.')
 
 
 if __name__ == "__main__":
     json5_generator.Maker(CSSPropertyNamesWriter).main()