views: fold layout_utils::CreatePanelLayout into GridLayout::CreatePanel

chrome/browser/chromeos/enrollment_dialog_view.cc

Index: chrome/browser/chromeos/enrollment_dialog_view.cc
diff --git a/chrome/browser/chromeos/enrollment_dialog_view.cc b/chrome/browser/chromeos/enrollment_dialog_view.cc
index 0879482915badd479aa390c7bafc8ae4719f370b..33f3af5a4bfdb2e073d95eb3517c9a7d5c812f09 100644
--- a/chrome/browser/chromeos/enrollment_dialog_view.cc
+++ b/chrome/browser/chromeos/enrollment_dialog_view.cc
@@ -162,7 +162,6 @@ void EnrollmentDialogView::InitDialog() {
   label->SetAllowCharacterBreak(true);
 
   views::GridLayout* grid_layout = views::GridLayout::CreatePanel(this);
-  SetLayoutManager(grid_layout);
 
   views::ColumnSet* columns = grid_layout->AddColumnSet(0);
   columns->AddColumn(views::GridLayout::FILL,  // Horizontal resize.