need to communicate with Extension

I have a Chrome Extension that is installed in the same browser that is hosting my CI based app. I need to communicate from the web app to the Extension. I was told that I could do this by running this in the web app:

Code:

chrome.runtime.sendMessage(editorExtensionId, {openUrlInEditor: url},
 function(response) {
   if (!response.success)
     handleError(url);
 });

This will generate a message that my Extension can see and react to.

The question is "how do I run the above code from my CI based php app"? Is that javascript that I can run when my app starts up? Since the server is generating HTML pages, how do I get this working? I do need to see the result of this call since I will "grey out" certain functions in my web app if the Extension is not found. 

Any clues? 

proof that an old dog can learn new tricks