Mojo: Remove url type converters.

components/password_manager/content/public/interfaces/credential_manager.mojom

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 module password_manager.mojom;
 
 import "url/mojo/origin.mojom";
+import "url/mojo/url.mojom";
 
 enum CredentialType {
   EMPTY,
   PASSWORD,
   FEDERATED
 };
 
 enum CredentialManagerError {
   SUCCESS,
   DISABLED,
   PENDINGREQUEST,
   PASSWORDSTOREUNAVAILABLE,
   UNKNOWN
 };
 
 struct CredentialInfo {
   CredentialType type = EMPTY;
   string id = "";
   string name = "";
-  string icon = "";
+  url.mojom.Url icon;
   string password = "";
   url.mojom.Origin federation;
 };
 
 interface CredentialManager {
   // Store credential. For navigator.credentials.store().
   Store(CredentialInfo credential) => ();
 
   // Require user mediation. For navigator.credentials.requireUserMediation().
   RequireUserMediation() => ();
 
   // Get Credential. For navigator.credentials.get().
   // The result callback will return a non-null and valid CredentialInfo
   // if succeeded, or null with a CredentialManagerError if failed.
-  Get(bool zero_click_only, bool include_passwords, array<string> federations)
+  Get(bool zero_click_only,
+      bool include_passwords,
+      array<url.mojom.Url> federations)
       => (CredentialManagerError error, CredentialInfo? credential);
 };