views: add layout delegates

chrome/browser/ui/views/harmony/harmony_layout_delegate.h

+// 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_HARMONY_HARMONY_LAYOUT_DELEGATE_H_
+#define CHROME_BROWSER_UI_VIEWS_HARMONY_HARMONY_LAYOUT_DELEGATE_H_
+
+#include "chrome/browser/ui/views/harmony/layout_delegate.h"
+
+class HarmonyLayoutDelegate : public LayoutDelegate {
+ public:
+  HarmonyLayoutDelegate() {}
+  ~HarmonyLayoutDelegate() override {}
+
+  // Returns the singleton HarmonyLayoutDelegate instance.
+  static HarmonyLayoutDelegate* Get();
+
+  // views::LayoutDelegate:
+  int GetLayoutDistance(LayoutDistanceType type) const override;
+  bool UseExtraDialogPadding() const override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(HarmonyLayoutDelegate);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_HARMONY_HARMONY_LAYOUT_DELEGATE_H_