Implement the new Sync Confirmation dialog on Linux and Windows.

chrome/browser/ui/views/profiles/signin_view_controller.cc

Index: chrome/browser/ui/views/profiles/signin_view_controller.cc
diff --git a/chrome/browser/ui/views/profiles/signin_view_controller.cc b/chrome/browser/ui/views/profiles/signin_view_controller.cc
index d5fd524c046bb92c98711587bfdaa4e0d65474a5..7e8e0ea07bb41d334e500dd00bca6ebea4fa1911 100644
--- a/chrome/browser/ui/views/profiles/signin_view_controller.cc
+++ b/chrome/browser/ui/views/profiles/signin_view_controller.cc
@@ -120,6 +120,15 @@ views::WebView* SigninViewController::CreateGaiaWebView(
   return web_view;
 }
 
+views::WebView* SigninViewController::CreateSyncConfirmationWebView(
+    Profile* profile) {
+  views::WebView* web_view = new views::WebView(profile);
+  web_view->LoadInitialURL(GURL("chrome://sync-confirmation"));

[Roger Tawa OOO till Jul 10th, 2015/12/03 20:33:45]

Use kChromeUISyncConfirmationURL.

[anthonyvd, 2015/12/03 21:48:03]

Done.

+  web_view->SetPreferredSize(gfx::Size(450, 360));
+
+  return web_view;
+}
+
 void SigninViewController::ShowModalSignin(
     profiles::BubbleViewMode mode, Browser* browser) {
   CloseModalSignin();
@@ -139,6 +148,12 @@ void SigninViewController::ResetModalSigninDelegate() {
   modal_signin_delegate_ = nullptr;
 }
 
+void SigninViewController::ShowModalSyncConfirmationDialog(Browser* browser) {
+  CloseModalSignin();
+  modal_signin_delegate_ = new ModalSigninDelegate(
+      this, CreateSyncConfirmationWebView(browser->profile()), browser);
+}
+
 // static
 bool SigninViewController::ShouldShowModalSigninForMode(
     profiles::BubbleViewMode mode) {