[Bindings] Reformat template files (4/4)

third_party/WebKit/Source/bindings/templates/dictionary_impl.cpp.tmpl

 {% filter format_blink_cpp_source_code %}
 
 {% include 'copyright_block.txt' %}
 #include "{{cpp_class}}.h"
 
 {% for filename in cpp_includes %}
 #include "{{filename}}"
 {% endfor %}
 
 namespace blink {
 
 {# Constructor #}
-{{cpp_class}}::{{cpp_class}}()
-{
-    {% for member in members if member.cpp_default_value %}
-    {{member.setter_name}}({{member.cpp_default_value}});
-    {% endfor %}
+{{cpp_class}}::{{cpp_class}}() {
+  {% for member in members if member.cpp_default_value %}
+  {{member.setter_name}}({{member.cpp_default_value}});
+  {% endfor %}
 }
 
-{{cpp_class}}::~{{cpp_class}}()
-{
+{{cpp_class}}::~{{cpp_class}}() {}
+
+DEFINE_TRACE({{cpp_class}}) {
+  {% for member in members if member.is_traceable %}
+  visitor->trace(m_{{member.cpp_name}});
+  {% endfor %}
+  {% if parent_cpp_class %}
+  {{parent_cpp_class}}::trace(visitor);
+  {% endif %}
 }
 
-DEFINE_TRACE({{cpp_class}})
-{
-    {% for member in members if member.is_traceable %}
-    visitor->trace(m_{{member.cpp_name}});
-    {% endfor %}
-    {% if parent_cpp_class %}
-    {{parent_cpp_class}}::trace(visitor);
-    {% endif %}
-}
-
-} // namespace blink
+}  // namespace blink
 
 {% endfilter %}{# format_blink_cpp_source_code #}