Modify the template to add analytics to all extension docs....

chrome/common/extensions/docs/static/npapi.html

 <div id="pageData-title" class="pageData">NPAPI Plugins</div>
 
 <p>
 Leveraging HTML and JavaScript
 makes developing new extensions really easy,
 but what if you have existing legacy or proprietary code
-that you want to reuse in your extension? 
+that you want to reuse in your extension?
 You can bundle an NPAPI plugin with your extension,
 allowing you to call into native binary code from JavaScript.
 </p>
 
 <h2>Details</h2>
 
 <p>
 How to develop an NPAPI plugin is outside the scope of this document.
 See <a href="https://developer.mozilla.org/en/Plugins">Mozilla's
 NPAPI plugin reference</a> for information on how to do that.
 </p>
 
 <p>
 Once you have an NPAPI plugin,
 follow these steps to get your extension using it.
 </p>
 
 <ol>
-  <li> 
+  <li>
     Add a section to your extension's <code>manifest.json</code>
     that describes where to find the plugin,
     along with other properties about it:
-    
+
 <pre>{
   "name": "My extension",
   ...
 <b>  "plugins": [
     { "path": "content_plugin.dll", "public": true },
     { "path": "extension_plugin.dll" }
   ]</b>
 }</pre>
 
     <p>
     The "path" property specifies the path to your plugin,
     relative to the manifest file.
     The "public" property specifies whether
     your plugin can be accessed by regular web pages;
     the default is false,
     meaning only your extension can load the plugin.
     </p>
    </li>
-   
+
    <li>
      Create an HTML file that loads your plugin by mime-type.
      Assuming your mime-type is "application/x-my-extension":
 
 <pre>
 &lt;embed type="application/x-my-extension" id="pluginId"></embed>
 &lt;script>
   var plugin = document.getElementById("pluginId");
   var result = plugin.myPluginMethod();  // call a method in your plugin
   console.log("my plugin returned: " + result);
 &lt;/script></pre>
 
      <p>
      This can be inside a toolstrip, a background page,
      or any other HTML page used by your extension.
      If your plugin is "public",
      you can even use a content script to programmatically
      insert your plugin into a web page.
      </p>