Simpler return value of HashTable::add/HashMap:add and others

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

 {% from "macros.tmpl" import lower_first -%}
 
 {#
     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)
 -#}
 
@@ skipping 274 matching lines @@
 {{ declare_initial_function(property_id) }} { }
 
 {{ declare_inherit_function(property_id) }}
 {
     CounterDirectiveMap& map = state.style()->accessCounterDirectives();
     CounterDirectiveMap& parentMap = state.parentStyle()->accessCounterDirectives();
 
     typedef CounterDirectiveMap::iterator Iterator;
     Iterator end = parentMap.end();
     for (Iterator it = parentMap.begin(); it != end; ++it) {
-        CounterDirectives& directives = map.add(it->key, CounterDirectives()).iterator->value;
+        CounterDirectives& directives = map.add(it->key, CounterDirectives()).storedValue->value;
         directives.inherit{{action}}(it->value);
     }
 }
 
 {{ declare_value_function(property_id) }}
 {
     CounterDirectiveMap& map = state.style()->accessCounterDirectives();
     typedef CounterDirectiveMap::iterator Iterator;
 
     Iterator end = map.end();
@@ skipping 12 matching lines @@
         CSSValue* currValue = list->itemWithoutBoundsCheck(i);
         if (!currValue->isPrimitiveValue())
             continue;
 
         Pair* pair = toCSSPrimitiveValue(currValue)->getPairValue();
         if (!pair || !pair->first() || !pair->second())
             continue;
 
         AtomicString identifier(pair->first()->getStringValue());
         int value = pair->second()->getIntValue();
-        CounterDirectives& directives = map.add(identifier, CounterDirectives()).iterator->value;
+        CounterDirectives& directives = map.add(identifier, CounterDirectives()).storedValue->value;
         {%- if action == "Reset" %}
         directives.setResetValue(value);
         {%- else %}
         directives.addIncrementValue(value);
         {%- endif %}
     }
 }
 {%- endmacro %}
 
 {{ apply_counter("CSSPropertyCounterIncrement", "Increment") }}
@@ skipping 155 matching lines @@
     } else if (value->isImageValue() || value->isImageSetValue()) {
         {{ set_value(property) }}(ShapeValue::createImageValue(state.styleImage({{property_id}}, value)));
     }
 }
 {%- endmacro %}
 
 {{ apply_value_shape("CSSPropertyShapeInside") }}
 {{ apply_value_shape("CSSPropertyShapeOutside") }}
 
 } // namespace WebCore