code/Debug/Model/Controller.php
public function addResponseInfo(Mage_Core_Controller_Response_Http $httpResponse)
    {
        $this->responseCode = $httpResponse->getHttpResponseCode();

        $this->responseHeaders = array();
        $headers = $httpResponse->getHeaders();
        foreach ($headers as $header) {
            $this->responseHeaders[$header['name']] = $header['value'];
        }
    }
public function addResponseInfo(Mage_Core_Controller_Response_Http $httpResponse)
    {
        $this->responseCode = $httpResponse->getHttpResponseCode();

        $this->responseHeaders = array();
        $headers = $httpResponse->getHeaders();
        foreach ($headers as $header) {
            $this->responseHeaders[$header['name']] = $header['value'];
        }
    }
Initialize response properties

@param Mage_Core_Controller_Response_Http $httpResponse