Support multiple lines for status text on Chooser UI

ui/views/window/dialog_client_view.h

Index: ui/views/window/dialog_client_view.h
diff --git a/ui/views/window/dialog_client_view.h b/ui/views/window/dialog_client_view.h
index 60080b00c8ce0ce32b3c6b26d8fe8b9d01f9c248..3fb88c08b25e2c1b91650c7e47fbe7ea9f34ccce 100644
--- a/ui/views/window/dialog_client_view.h
+++ b/ui/views/window/dialog_client_view.h
@@ -87,6 +87,12 @@ class VIEWS_EXPORT DialogClientView : public ClientView,
   // Update |button|'s text and enabled state according to the delegate's state.
   void UpdateButton(LabelButton* button, ui::DialogButton type);
 
+  // Returns the height of the buttons.
+  int GetButtonHeight() const;
+
+  // Returns the height of the extra view.
+  int GetExtraViewHeight() const;
+
   // Returns the height of the row containing the buttons and the extra view.
   int GetButtonsAndExtraViewRowHeight() const;