[credentialsmanager] Remove redundant tests

third_party/WebKit/LayoutTests/http/tests/credentialmanager/credentialscontainer-basics.html

Index: third_party/WebKit/LayoutTests/http/tests/credentialmanager/credentialscontainer-basics.html
diff --git a/third_party/WebKit/LayoutTests/http/tests/credentialmanager/credentialscontainer-basics.html b/third_party/WebKit/LayoutTests/http/tests/credentialmanager/credentialscontainer-basics.html
index 8662ab307661a3befa7da24a98a866c9987b9a27..eb65c38512c1c038768b1b4a1daffba759848f70 100644
--- a/third_party/WebKit/LayoutTests/http/tests/credentialmanager/credentialscontainer-basics.html
+++ b/third_party/WebKit/LayoutTests/http/tests/credentialmanager/credentialscontainer-basics.html
@@ -2,12 +2,20 @@
 <title>Credential Manager: CredentialsContainer basics.</title>
 <script src="../resources/testharness.js"></script>
 <script src="../resources/testharnessreport.js"></script>
-<script src="resources/interfaces.js"></script>
+<script src="/w3c/resources/WebIDLParser.js"></script>
+<script src="/w3c/resources/idlharness.js"></script>
+<script type="text/plain" id="tested">
+[Exposed=Window, SecureContext]
+interface CredentialsContainer {
+    Promise<Credential?> get(optional CredentialRequestOptions options);
+};
+</script>
 <script>
-test(function () {
-    assert_equals(typeof CredentialsContainer, "function");
-    verify_interface('CredentialsContainer', navigator.credentials, {
-        'get': 'function'
-    });
-}, 'Interfaces and attributes of CredentialsContainer');
+var idl_array = new IdlArray();
+idl_array.add_idls(document.querySelector('#tested').textContent);
+idl_array.add_objects({
+    Window: ['window'],
+    CredentialsContainer: ['navigator.credentials']
+});
+idl_array.test();

[Mike West, 2017/05/29 12:10:38]

I think we can just delete this test entirely. It should be subsumed by
https://github.com/w3c/web-platform-tests/blob/master/credential-management/i...
(though I note that that test is missing the `[Exposed=Window, SecureContext]`
bit from the interface; we should fix that).

[mike3, 2017/05/29 17:41:11]

Done.

[mike3, 2017/05/29 18:02:21]

Follow-up in WPT: https://github.com/w3c/web-platform-tests/pull/6076

 </script>