Make explicit constant for num of CSSPropertyIDs

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 19 matching lines @@
     // This isn't a property, but we need to know the position of @apply rules in style rules
     CSSPropertyApplyAtRule = 1,
     CSSPropertyVariable = 2,
 %(property_enums)s
 };
 
 const int firstCSSProperty = %(first_property_id)s;
 const int numCSSProperties = %(properties_count)s;
 const int lastCSSProperty = %(last_property_id)d;
 const int lastUnresolvedCSSProperty = %(last_unresolved_property_id)d;
+const int numCSSPropertyIDs = lastUnresolvedCSSProperty + 1;
 const size_t maxCSSPropertyNameLength = %(max_name_length)d;
 
 const char* getPropertyName(CSSPropertyID);
 const WTF::AtomicString& getPropertyNameAtomicString(CSSPropertyID);
 WTF::String getPropertyNameString(CSSPropertyID);
 WTF::String getJSPropertyName(CSSPropertyID);
 
 inline bool isCSSPropertyIDWithName(int id)
 {
     return id >= firstCSSProperty && id <= lastUnresolvedCSSProperty;
@@ skipping 187 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()