Implement the new Sync Confirmation dialog on Linux and Windows.

chrome/browser/ui/webui/signin/sync_confirmation_ui.cc

Index: chrome/browser/ui/webui/signin/sync_confirmation_ui.cc
diff --git a/chrome/browser/ui/webui/signin/sync_confirmation_ui.cc b/chrome/browser/ui/webui/signin/sync_confirmation_ui.cc
new file mode 100644
index 0000000000000000000000000000000000000000..821822298510224a99609440fa7a932faba76eb3
--- /dev/null
+++ b/chrome/browser/ui/webui/signin/sync_confirmation_ui.cc
@@ -0,0 +1,37 @@
+// Copyright 2015 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 "chrome/browser/ui/webui/signin/sync_confirmation_ui.h"
+
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/webui/signin/sync_confirmation_handler.h"
+#include "chrome/grit/generated_resources.h"
+#include "content/public/browser/web_ui.h"
+#include "content/public/browser/web_ui_data_source.h"
+#include "grit/browser_resources.h"
+
+SyncConfirmationUI::SyncConfirmationUI(content::WebUI* web_ui)
+    : WebDialogUI(web_ui) {
+  Profile* profile = Profile::FromWebUI(web_ui);
+  content::WebUIDataSource* source =
+      content::WebUIDataSource::Create("sync-confirmation");
+  source->SetJsonPath("strings.js");
+  source->OverrideContentSecurityPolicyFrameSrc("frame-src chrome-extension:;");
+  source->OverrideContentSecurityPolicyObjectSrc("object-src *;");

[Dan Beam, 2016/01/13 23:45:22]

^ I don't really know how CSP works, maybe this should be quickly glanced at by
somebody that does

[anthonyvd, 2016/01/18 21:40:08]

I based this code on some other web ui since it was the first time I was
building one. Turns out there's no need to override the CSP in this case.

Done.

+  source->SetDefaultResource(IDR_SYNC_CONFIRMATION_HTML);
+  source->AddResourcePath("sync-confirmation.css", IDR_SYNC_CONFIRMATION_CSS);
+  source->AddResourcePath("sync-confirmation.js", IDR_SYNC_CONFIRMATION_JS);
+
+  source->AddLocalizedString("syncConfirmationTitle",
+      IDS_SYNC_CONFIRMATION_TITLE);
+  source->AddLocalizedString("syncConfirmationBody",
+      IDS_SYNC_CONFIRMATION_BODY);
+  source->AddLocalizedString("syncConfirmationConfirmLabel",
+      IDS_SYNC_CONFIRMATION_CONFIRM_BUTTON_LABEL);
+  source->AddLocalizedString("syncConfirmationUndoLabel",
+      IDS_SYNC_CONFIRMATION_UNDO_BUTTON_LABEL);
+
+  content::WebUIDataSource::Add(profile, source);
+  web_ui->AddMessageHandler(new SyncConfirmationHandler);
+}