adjust location of URI helper files for spawn_uri tests in the browser.

tests/isolate/isolate.status

Index: tests/isolate/isolate.status
diff --git a/tests/isolate/isolate.status b/tests/isolate/isolate.status
index 13a11b8aca3d987d10a69c66e0f913cf5c648ca0..4595fa53169acb1185ac3174d40eb47093c6ae48 100644
--- a/tests/isolate/isolate.status
+++ b/tests/isolate/isolate.status
@@ -34,9 +34,6 @@ isolate3_negative_test: Skip  # Inherited from VM.
 serialization_test: Skip  # tests dart2js-specific serialization code
 spawn_uri_test: Skip # uses a .js extension (not for dartium)
 spawn_uri_negative_test: Skip # ditto
-spawn_uri_vm_test: Skip # not implemented in dartium yet.
-spawn_uri_nested_vm_test: Skip # not implemented in dartium yet.
-spawn_uri_vm_negative_test: Skip
 
 [ $compiler == dartc ]
 isolate_negative_test: Fail    # status change with --check-only
@@ -92,8 +89,6 @@ isolate2_negative_test: Skip # Timeout.
 unresolved_ports_negative_test: Skip # See Issue 6839
 
 [ $compiler == dart2js && $browser ]
-spawn_uri_test: Skip # dart2js does not support spawnUri yet
-spawn_uri_negative_test: Skip # ditto
 spawn_uri_vm_test: Skip # test uses a ".dart" suffix that only works in vm.
 spawn_uri_nested_vm_test: Skip # test uses a ".dart" suffix that only works in vm.
 spawn_uri_vm_negative_test: Skip # ditto above.