fix: WebAuthn Discoverable Credential (Resident Credential)

filenames.gni

@@ -519,6 +519,8 @@ filenames = {
     "shell/browser/web_view_guest_delegate.h",
     "shell/browser/web_view_manager.cc",
     "shell/browser/web_view_manager.h",
+    "shell/browser/webauthn/electron_authenticator_request_delegate.cc",
+    "shell/browser/webauthn/electron_authenticator_request_delegate.h",
     "shell/browser/window_list.cc",
     "shell/browser/window_list.h",
     "shell/browser/window_list_observer.h",

shell/browser/electron_browser_client.cc

@@ -103,6 +103,7 @@
 #include "shell/browser/ui/devtools_manager_delegate.h"
 #include "shell/browser/web_contents_permission_helper.h"
 #include "shell/browser/web_contents_preferences.h"
+#include "shell/browser/webauthn/electron_authenticator_request_delegate.h"
 #include "shell/browser/window_list.h"
 #include "shell/common/api/api.mojom.h"
 #include "shell/common/application_info.h"
@@ -1837,4 +1838,13 @@ content::HidDelegate* ElectronBrowserClient::GetHidDelegate() {
   return hid_delegate_.get();
 }
 
+content::WebAuthenticationDelegate*
+ElectronBrowserClient::GetWebAuthenticationDelegate() {
+  if (!web_authentication_delegate_) {
+    web_authentication_delegate_ =
+        std::make_unique<ElectronWebAuthenticationDelegate>();
+  }
+  return web_authentication_delegate_.get();
+}
+
 }  // namespace electron

shell/browser/electron_browser_client.h

@@ -38,6 +38,7 @@ namespace electron {
 class ElectronBrowserMainParts;
 class NotificationPresenter;
 class PlatformNotificationService;
+class ElectronWebAuthenticationDelegate;
 
 class ElectronBrowserClient : public content::ContentBrowserClient,
                               public content::RenderProcessHostObserver {
@@ -102,6 +103,8 @@ class ElectronBrowserClient : public content::ContentBrowserClient,
 
   content::HidDelegate* GetHidDelegate() override;
 
+  content::WebAuthenticationDelegate* GetWebAuthenticationDelegate() override;
+
   device::GeolocationManager* GetGeolocationManager() override;
 
   content::PlatformNotificationService* GetPlatformNotificationService();
@@ -330,6 +333,8 @@ class ElectronBrowserClient : public content::ContentBrowserClient,
   std::unique_ptr<ElectronSerialDelegate> serial_delegate_;
   std::unique_ptr<ElectronBluetoothDelegate> bluetooth_delegate_;
   std::unique_ptr<ElectronHidDelegate> hid_delegate_;
+  std::unique_ptr<ElectronWebAuthenticationDelegate>
+      web_authentication_delegate_;
 
 #if BUILDFLAG(IS_MAC)
   ElectronBrowserMainParts* browser_main_parts_ = nullptr;

shell/browser/webauthn/electron_authenticator_request_delegate.cc

@@ -0,0 +1,23 @@
+// Copyright 2018 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.
+
+#include "shell/browser/webauthn/electron_authenticator_request_delegate.h"
+
+namespace electron {
+// ---------------------------------------------------------------------
+// ElectronWebAuthenticationDelegate
+// ---------------------------------------------------------------------
+
+ElectronWebAuthenticationDelegate::~ElectronWebAuthenticationDelegate() =
+    default;
+
+#if !BUILDFLAG(IS_ANDROID)
+bool ElectronWebAuthenticationDelegate::SupportsResidentKeys(
+    content::RenderFrameHost* render_frame_host) {
+  return true;
+}
+
+#endif  // !IS_ANDROID
+
+}  // namespace electron

shell/browser/webauthn/electron_authenticator_request_delegate.h

@@ -0,0 +1,27 @@
+// Copyright 2018 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.
+
+#ifndef ELECTRON_BROWSER_WEBAUTHN_CHROME_AUTHENTICATOR_REQUEST_DELEGATE_H_
+#define ELECTRON_BROWSER_WEBAUTHN_CHROME_AUTHENTICATOR_REQUEST_DELEGATE_H_
+
+#include "content/public/browser/authenticator_request_client_delegate.h"
+
+namespace electron {
+
+// ElectronWebAuthenticationDelegate is the //Electron layer implementation of
+// content::WebAuthenticationDelegate.
+// Based on Chrome browser class ChromeWebAuthenticationDelegate
+class ElectronWebAuthenticationDelegate
+    : public content::WebAuthenticationDelegate {
+ public:
+  ~ElectronWebAuthenticationDelegate() override;
+
+#if !BUILDFLAG(IS_ANDROID)
+  bool SupportsResidentKeys(
+      content::RenderFrameHost* render_frame_host) override;
+#endif
+};
+
+}  // namespace electron
+#endif