fix for #785 - fix up gutter logic a little bit. on a path to getting all gutter info in one place

git-svn-id: http://svn.openlayers.org/trunk/openlayers@3555 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

tests/Layer/test_Image.html

@@ -39,7 +39,7 @@
     }
 
     function test_50_Layer_Image_tileTests (t) {
-        t.plan(9);
+        t.plan(6);
         var map = new OpenLayers.Map('map');
         
         layer = new OpenLayers.Layer.Image('Test Layer', 
@@ -49,9 +49,6 @@
 
         map.addLayer(layer);
         map.zoomToMaxExtent();
-        t.ok(layer.imageSize, "layer.imageSize is set");
-        t.ok(layer.tileSize, "layer.tileSize is set");
-        t.ok(layer.tileSize.equals(layer.imageSize), "tileSize equals imageSize");
 
         // no resolution info was sent, so maxResolution should be calculated
         // by aspectRatio*extent/size (this is the pixel aspect ratio)