bindings: Support (deprecated) Dictionary in IDL dictionary

Source/bindings/templates/dictionary_v8.cpp

 {% from 'conversions.cpp' import declare_enum_validation_variable %}
 {% include 'copyright_block.txt' %}
 #include "config.h"
 #include "{{v8_original_class}}.h"
 
 {% for filename in cpp_includes if filename != '%s.h' % v8_class %}
 #include "{{filename}}"
 {% endfor %}
 
 namespace blink {
@@ skipping 54 matching lines @@
             {% if member.is_interface_type %}
             if (!{{member.name}} && !{{member.name}}Value->IsNull()) {
                 exceptionState.throwTypeError("member {{member.name}} is not of type {{member.idl_type}}.");
                 return;
             }
             {% endif %}
             {% if member.enum_values %}
             {{declare_enum_validation_variable(member.enum_values) | indent(12)}}
             if (!isValidEnum({{member.name}}, validValues, WTF_ARRAY_LENGTH(validValues), "{{member.enum_type}}", exceptionState))
                 return;
-            {% elif member.is_object %}
+            {% elif member.is_object or member.is_deprecated_dictionary %}
             if (!{{member.name}}.isObject()) {
                 exceptionState.throwTypeError("member {{member.name}} is not an object.");
                 return;
             }
             {% endif %}
             impl.{{member.setter_name}}({{member.name}});
         }
     }
 
     {% endfor %}
@@ skipping 35 matching lines @@
 }
 
 {{cpp_class}} NativeValueTraits<{{cpp_class}}>::nativeValue(v8::Isolate* isolate, v8::Local<v8::Value> value, ExceptionState& exceptionState)
 {
     {{cpp_class}} impl;
     {{v8_class}}::toImpl(isolate, value, impl, exceptionState);
     return impl;
 }
 
 } // namespace blink