Enable cross frame window operations

tests/html/html.status

Index: tests/html/html.status
diff --git a/tests/html/html.status b/tests/html/html.status
index 7270a76d6a887ee5c641c276faf6d51b9de755cc..de6f977863954a50089aa0fb246fabe388db6f81 100644
--- a/tests/html/html.status
+++ b/tests/html/html.status
@@ -33,7 +33,6 @@ window_nosuchmethod_test: Fail # Issue 1837, frog puts top-level members in the
 # TODO(vsm): Triage DOM tests.
 dom_isolates_test: Fail
 indexeddb_2_test: Fail  # Issue 1883 - IndexedDB methods don't handle maps correctly.
-window_open_test: Fail
 
 [ $runtime == dartium || $runtime == chrome || $runtime == ie || $runtime == safari || $runtime == ff || $runtime == opera ]
 history_test: Fail
@@ -176,7 +175,6 @@ typed_arrays_1_test: Fail # dart2js doesn't support is checks with generic types
 indexeddb_3_test: Fail  # Caught Error: DATA_ERR: DOM IDBDatabase Exception 5 Error: The data provided does not meet the requirements of the function.
 # DOM errors.
 indexeddb_2_test: Fail # Uncaught error
-window_open_test: Fail # TypeError: Object [object Window] has no method 'close$0'
 
 [ $compiler == dart2js && $runtime == chrome ]
 # TODO(sra): Triage incompatibility issue.
@@ -203,4 +201,3 @@ fileapi_test: Skip # Issue 3022
 [ $compiler == dart2js && $runtime == drt && $system == macos ]
 indexeddb_2_test: Fail # Issue 3669.
 indexeddb_3_test: Fail # Issue 3670.
-window_open_test: Fail # Issue 3671.