Docserver: Show callback parameters in all callback references.

chrome/common/extensions/docs/templates/private/callback.html

 {{#callback}}
   <p>
   {{?optional}}
       If you specify the <em>{{name}}</em> parameter, it should
       be a function that looks like this:
   {{:optional}}
       The <em>{{name}}</em> parameter should be a function
       that looks like this:
   {{/optional}}
   </p>
 <code class="prettyprint">function({{#p:parameters}}{{+partials.variable_type type:p/}} {{p.name}}{{^p.last}}, {{/}}{{/}}) <span class="subdued">{...}</span>;</code>
 {{?description}}
 <p>
   {{{description}}}
 </p>
 {{/description}}
 {{?parameters}}
   <table class="innerTable">
   {{#p:parameters}}
-    {{+partials.parameter_full parameter:p parentName:name hideParamTOC:true /}}
+  {{+partials.parameter_full parameter:p
+                             parentName:name
+                             parentCallback:callback

[not at google - send to devlin, 2014/07/21 22:49:47]

Thanks for doing this. I'm trying to figure out why this is called
"parentCallback" and not just "callback", but, failing. I'm also seeing a number
of other uses of parameter_full without specifying a parentCallback:
- articles/settings_override.html and articles/ui_override.html
- private/api_property.html
- private/event.html
- private/property.html (twice)
- private/type_item.html (from all the various places that "item_partial" is
passed in without a parentCallback)

Do any of those mean anything to you?

+                             hideParamTOC:true /}}
   {{/parameters}}
   </table>
 {{/parameters}}
 {{/callback}}