Change first() and second() in CSSPairValue to return const references

Source/build/scripts/templates/StyleBuilderFunctions.cpp.tmpl

 {% from 'macros.tmpl' import license %}
 {#
     This file is for property handlers which use the templating engine to
     reduce (handwritten) code duplication.
 
     The `properties' dict can be used to access a property's parameters in
     jinja2 templates (i.e. setter, getter, initial, type_name)
 #}
 #include "config.h"
 #include "StyleBuilderFunctions.h"
@@ skipping 329 matching lines @@
         return;
     }
 
     CounterDirectiveMap& map = state.style()->accessCounterDirectives();
 
     CSSValueList* list = toCSSValueList(value);
 
     int length = list ? list->length() : 0;
     for (int i = 0; i < length; ++i) {
         const CSSValuePair* pair = toCSSValuePair(list->item(i));
-        AtomicString identifier(toCSSPrimitiveValue(pair->first())->getStringValue());
-        int value = toCSSPrimitiveValue(pair->second())->getIntValue();
+        AtomicString identifier(toCSSPrimitiveValue(pair->first()).getStringValue());
+        int value = toCSSPrimitiveValue(pair->second()).getIntValue();
         CounterDirectives& directives = map.add(identifier, CounterDirectives()).storedValue->value;
         {% if action == 'Reset' %}
         directives.setResetValue(value);
         {% else %}
         directives.addIncrementValue(value);
         {% endif %}
     }
     ASSERT(!map.isEmpty());
 }
 {% endmacro %}
@@ skipping 162 matching lines @@
         paintType = url.isEmpty() ? SVG_PAINTTYPE_RGBCOLOR : SVG_PAINTTYPE_URI_RGBCOLOR;
     }
     {{set_value(property)}}(paintType, color, url,
         state.applyPropertyToRegularStyle(),
         state.applyPropertyToVisitedLinkStyle());
 }
 {% endmacro %}
 {{apply_svg_paint('CSSPropertyFill', 'FillPaint')}}
 {{apply_svg_paint('CSSPropertyStroke', 'StrokePaint')}}
 } // namespace blink