CREDENTIAL: Teach Fetch to handle PasswordCredential objects.

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

Index: third_party/WebKit/LayoutTests/http/tests/credentialmanager/passwordcredential-basics.html
diff --git a/third_party/WebKit/LayoutTests/http/tests/credentialmanager/passwordcredential-basics.html b/third_party/WebKit/LayoutTests/http/tests/credentialmanager/passwordcredential-basics.html
index 2cb64e14793c5f652e54a2c84c29152369cf4b3d..62d7a3df811210ab71b30e4e21530764567c586f 100644
--- a/third_party/WebKit/LayoutTests/http/tests/credentialmanager/passwordcredential-basics.html
+++ b/third_party/WebKit/LayoutTests/http/tests/credentialmanager/passwordcredential-basics.html
@@ -23,8 +23,9 @@ test(function() {
     assert_equals(credential.name, 'name');
     assert_equals(credential.iconURL, 'https://example.com/icon.png');
     assert_equals(credential.type, 'password');
-
-    assert_true(credential.toFormData() instanceof FormData);
+    assert_equals(credential.idName, 'username');
+    assert_equals(credential.passwordName, 'password');
+    assert_equals(credential.additionalData, null);
 }, 'Interfaces and attributes of PasswordCredential');
 
 test(function() {
@@ -49,7 +50,9 @@ test(function() {
     assert_equals(credential.name, 'name');
     assert_equals(credential.iconURL, '');
     assert_equals(credential.type, 'password');
-    assert_true(credential.toFormData() instanceof FormData);
+    assert_equals(credential.idName, 'username');
+    assert_equals(credential.passwordName, 'password');
+    assert_equals(credential.additionalData, null);
 
 }, 'Construct a PasswordCredential with an empty icon URL.');
 
@@ -63,6 +66,25 @@ test(function() {
     assert_equals(credential.name, '');
     assert_equals(credential.iconURL, '');
     assert_equals(credential.type, 'password');
-    assert_true(credential.toFormData() instanceof FormData);
+    assert_equals(credential.idName, 'username');
+    assert_equals(credential.passwordName, 'password');
+    assert_equals(credential.additionalData, null);
 }, 'Construct a PasswordCredential with an empty name and icon URL.');
+
+test(function() {
+    var credential = new PasswordCredential({
+        id: 'id',
+        password: 'pencil',
+    });
+
+    credential.idName = 'yay';
+    assert_equals(credential.idName, 'yay');
+
+    credential.passwordName = 'boo';
+    assert_equals(credential.passwordName, 'boo');
+
+    var additionalData = new FormData();
+    credential.additionalData = additionalData;
+    assert_equals(credential.additionalData, additionalData);
+}, 'Verify the basics of "idName", "passwordName", and "additionalData"');
 </script>