harmony: use Harmony sizing for ViewsDelegate sizing functions

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();
 
+  // The Harmony layout unit. All distances are in terms of this unit.
+  static const int kHarmonyLayoutUnit = 16;

[sky, 2016/11/17 18:18:34]

style guide says constants should be before constructor/destructor.

+
   // 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_