protect 2 Google test cases for validkey

tests/Layer/Google.html

@@ -237,7 +237,7 @@
     }
     
     function test_setOpacity(t) {
-        
+        if(validkey) {        
             t.plan(6);
         
             var map = new OpenLayers.Map("map");
@@ -283,7 +283,11 @@
             t.ok(opacityCheck(0.5), "container opacity set to layer opacity");
         
             map.destroy();
-        
+        } else {
+            t.plan(0);
+            t.debug_print("Google tests can't be run from " +
+                          window.location.host);
+        }        
     }
 
     function test_Layer_Google_setGMapVisibility(t) {
@@ -322,6 +326,7 @@
     
     function test_sphericalMercator(t) {
 
+        if (validkey) {        
             t.plan(4);
             var map, layer;
 
@@ -348,7 +353,11 @@
             map.addLayer(layer);
             t.eq(map.getProjection(), "EPSG:102113", "custom code respected with sphericalMercator");
             map.destroy();
-        
+        } else {
+            t.plan(0);
+            t.debug_print("Google tests can't be run from " +
+                          window.location.host);
+        }        
     }