/* Google maps */
	public static function googlemap($atts, $content = null){
		extract(Shortcodes_Parser::instance()->atts(array(
			'title' => '',
			'iframe_src' => '',
			'addr' => '',
			'lat' => '',
			'lng' => '',
			'ratio' => '',
			'width' => '',
			'height' => ''
		), $atts));
		$googlemap = '';
		
		$map_id = self::randomString(10);
		if( $iframe_src==''){
			$address = str_replace(' ', '+', $addr);
			$jsonResponse = @file_get_contents('http://maps.googleapis.com/maps/api/geocode/json?address='.$address);
			if ($jsonResponse) {
				$jsonResponse = json_decode($jsonResponse);
				$lat = $lat==''?$jsonResponse->results[0]->geometry->location->lat:$lat;
				$lng = $lng==''?$jsonResponse->results[0]->geometry->location->lng:$lng;
			}
		}
		
		$ratio = explode(':', $ratio);
		$style = ' style="'.($width!=''?'width:'.$width.';':'').($height!=''?'height:'.$height.';':($ratio!=''?'padding-bottom:'.(($ratio[1]/$ratio[0])*100).'%;':'')).'"';
		
		// $googlemap .= '<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?language='.JFactory::getLanguage()->getTag().'"></script>';
		$googlemap .= '<div class="embed-responsive"'.$style.'>';
		if ($iframe_src!=''){
			$googlemap .= '<iframe  class="embed-responsive-item" src="'.$iframe_src.'" frameborder="0" style="border:0"></iframe>';
		} else {
			$googlemap .= '<div id="gmap_canvas'.$map_id.'" class="embed-responsive-item"></div>'
						. '<style>#gmap_canvas'.$map_id.' img{max-width:none!important;background:none!important}</style>';
		}
		$googlemap .= '</div>';
		if( $iframe_src==''){
			$googlemap .= '<script type="text/javascript">'
						. 'function init_map(){'
							. 'var myOptions = {'
								. 'zoom:16,'
								. 'center:new google.maps.LatLng(' . $lat . ',' . $lng . '),'
								. 'mapTypeId: google.maps.MapTypeId.ROADMAP'
							. '};'
							. 'map = new google.maps.Map(document.getElementById("gmap_canvas'.$map_id.'"), myOptions);'
							. 'marker = new google.maps.Marker({'
								. 'map: map,'
								. 'position: new google.maps.LatLng(' . $lat . ',' . $lng . ')'
							. '});'
							. 'infowindow = new google.maps.InfoWindow({'
								. 'content:"'. ($title!=''?'<b>'.$title.'</b><br/>':'').$addr.'"'
							. '});'
							. 'google.maps.event.addListener(marker, "click", function(){'
								. 'infowindow.open(map,marker);'
							. '});'
							. 'infowindow.open(map,marker);'
						. '}'
						. 'google.maps.event.addDomListener(window, \'load\', init_map);'
					. '</script>';
		}
		return $googlemap;
	}

The google map: I think it here: root / plugins / system / omgshortcodes / inc / shortcodes-handlers.php line 79

// $googlemap .= '<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?language='.JFactory::getLanguage()->getTag().'"></script>';