views: add layout delegates

chrome/browser/ui/views/layout_utils.h

Index: chrome/browser/ui/views/layout_utils.h
diff --git a/chrome/browser/ui/views/layout_utils.h b/chrome/browser/ui/views/layout_utils.h
new file mode 100644
index 0000000000000000000000000000000000000000..25937a9cad9991bb5e611d2d39f15cf37322585f
--- /dev/null
+++ b/chrome/browser/ui/views/layout_utils.h
@@ -0,0 +1,21 @@
+// 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.
+
+#ifndef CHROME_BROWSER_UI_VIEWS_LAYOUT_UTILS_H_
+#define CHROME_BROWSER_UI_VIEWS_LAYOUT_UTILS_H_
+
+namespace views {
+class GridLayout;
+class View;
+}  // namespace views
+
+namespace chrome {

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

We generally don't use 'chrome' namespace for files like this. There are long
discussions on chromium-dev about namespaces. layout_utils is fine as it matches
the file name.

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

Done.

+namespace layout_utils {
+
+views::GridLayout* CreatePanelLayout(views::View* host);
+
+}  // namespace layout_utils
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_UI_VIEWS_LAYOUT_UTILS_H_