[credentialsmanager] Remove redundant tests

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

Index: third_party/WebKit/LayoutTests/http/tests/credentialmanager/credentialscontainer-get-basics.html
diff --git a/third_party/WebKit/LayoutTests/http/tests/credentialmanager/credentialscontainer-get-basics.html b/third_party/WebKit/LayoutTests/http/tests/credentialmanager/credentialscontainer-get-basics.html
index a27e31784078d6002ebc710a8b2adde6010f42e4..a403eb554021583949c5e2dbd95b47563c1558ea 100644
--- a/third_party/WebKit/LayoutTests/http/tests/credentialmanager/credentialscontainer-get-basics.html
+++ b/third_party/WebKit/LayoutTests/http/tests/credentialmanager/credentialscontainer-get-basics.html
@@ -2,7 +2,31 @@
 <title>Credential Manager: get() 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 Credential {
+  readonly attribute USVString id;
+  readonly attribute DOMString type;
+};
+
+[NoInterfaceObject, SecureContext]
+interface CredentialUserData {
+  readonly attribute USVString name;
+  readonly attribute USVString iconURL;
+};
+
+[Constructor(HTMLFormElement form),
+ Constructor(PasswordCredentialData data),
+ Exposed=Window,
+ SecureContext]
+interface PasswordCredential : Credential {
+  readonly attribute USVString password;
+};
+
+PasswordCredential implements CredentialUserData;
+</script>
 <script>
 function stubResolverUndefinedChecker(c) {
     assert_equals(c, undefined);
@@ -130,11 +154,13 @@ add_completion_callback(() => {
     var password = "pencil";
 
     function stubResolverChecker(c) {
-        verify_interface('PasswordCredential', c, {
-            id: 'string',
-            name: 'string',
-            iconURL: 'string'
+        var idl_array = new IdlArray();
+        idl_array.add_idls(document.querySelector('#tested').textContent);
+        window.c = c;
+        idl_array.add_objects({
+            PasswordCredential: ["c"]
         });
+        idl_array.test();

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

Likewise, the IDL checks here can just be removed in favor of those already in
https://github.com/w3c/web-platform-tests/blob/master/credential-management/i....

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

Done.

 
         assert_equals(c.id, id);
         assert_equals(c.name, name);