Make profile error dialog async

chrome/browser/ui/simple_message_box.h

Index: chrome/browser/ui/simple_message_box.h
diff --git a/chrome/browser/ui/simple_message_box.h b/chrome/browser/ui/simple_message_box.h
index c7585a121c911daedd6f6daf979d5df0cff45508..1dd0ce136ed8383118d5899a8dea89ef52975bd8 100644
--- a/chrome/browser/ui/simple_message_box.h
+++ b/chrome/browser/ui/simple_message_box.h
@@ -5,6 +5,7 @@
 #ifndef CHROME_BROWSER_UI_SIMPLE_MESSAGE_BOX_H_
 #define CHROME_BROWSER_UI_SIMPLE_MESSAGE_BOX_H_
 
+#include "base/callback_forward.h"
 #include "base/compiler_specific.h"
 #include "base/strings/string16.h"
 #include "ui/gfx/native_widget_types.h"
@@ -36,12 +37,15 @@ void ShowWarningMessageBox(gfx::NativeWindow parent,
                            const base::string16& title,
                            const base::string16& message);
 
-// As above, but with a checkbox. Returns true if the checkbox was checked when
-// the dialog was dismissed, false otherwise.
-bool ShowWarningMessageBoxWithCheckbox(gfx::NativeWindow parent,
-                                       const base::string16& title,
-                                       const base::string16& message,
-                                       const base::string16& checkbox_text);
+// As above, but shows the dialog box asynchronously with a checkbox.
+// |callback| will be invoked after the dialog is dismissed. It is invoked with
+// true if the checkbox is checked and false otherwise.
+void ShowWarningMessageBoxWithCheckbox(
+    gfx::NativeWindow parent,
+    const base::string16& title,
+    const base::string16& message,
+    const base::string16& checkbox_text,
+    base::OnceCallback<void(bool checked)> callback);
 
 // As above, but two buttons are displayed and the return value indicates which
 // is chosen.