views: add layout delegates

chrome/browser/ui/views/layout_utils.cc

+// Copyright 2016 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/views/layout_utils.h"
+#include "chrome/browser/ui/views/harmony/layout_delegate.h"

[sky, 2016/11/14 21:49:32]

newline between lines 5 and 6.

[Elly Fong-Jones, 2016/11/15 17:13:39]

Done.

+#include "ui/views/layout/grid_layout.h"
+#include "ui/views/view.h"
+
+namespace chrome {
+namespace layout_utils {
+
+views::GridLayout* CreatePanelLayout(views::View* host) {

[sky, 2016/11/14 21:49:32]

optional: Consider having this set the returned GridLayout as the layout manager
on host to save extra code. When I created the views variant of this function my
reviewer suggested otherwise, but I think it's just as clear to set the
LayoutManager and return it here to save code.

[Elly Fong-Jones, 2016/11/15 17:13:39]

Done.

+  views::GridLayout* layout = new views::GridLayout(host);
+  chrome::LayoutDelegate* delegate =
+      chrome::LayoutDelegate::GetActiveInstance();
+  layout->SetInsets(gfx::Insets(
+      delegate->GetLayoutDistance(chrome::LayoutDelegate::PANEL_VERT_MARGIN),
+      delegate->GetLayoutDistance(
+          chrome::LayoutDelegate::BUTTON_HEDGE_MARGIN_NEW)));
+  return layout;
+}
+
+}  // namespace layout_utils
+}  // namespace chrome