"Bootstrap" a toolkit-views Typography spec.

chrome/browser/ui/views/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_LAYOUT_DELEGATE_H_
 #define CHROME_BROWSER_UI_VIEWS_HARMONY_LAYOUT_DELEGATE_H_
 
 #include "ui/views/layout/grid_layout.h"
 
+namespace views {
+class TypographyProvider;
+}
+
 class LayoutDelegate {
  public:
   enum class Metric {
     // Padding on the left and right side of a button's label.
     BUTTON_HORIZONTAL_PADDING,
     // The maximum width a button can have and still influence the sizes of
     // other linked buttons.  This allows short buttons to have linked widths
     // without long buttons making things overly wide.
     BUTTON_MAX_LINKABLE_WIDTH,
     // Default minimum width of a button.
@@ skipping 69 matching lines @@
   // Instead of using this, create a generic solution that works for all UI
   // types, e.g. by adding a new LayoutDistance value that means what you need.
   //
   // TODO(pkasting): Fix callers and remove this.
   virtual bool IsHarmonyMode() const;
 
   // Returns the preferred width in DIPs for a dialog of the specified |width|.
   // May return 0 if the dialog has no preferred width.
   virtual int GetDialogPreferredWidth(DialogWidth width) const;
 
+  // Returns the class that maps views::style (TextContext and TextStyle) to

[Peter Kasting, 2017/03/17 20:59:39]

Nit: style -> style values (or style enums)

[tapted, 2017/03/20 07:33:35]

Done.

+  // specific font properties (e.g. typeface, size, color, line spacing).
+  virtual const views::TypographyProvider& GetTypographyProvider() const;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(LayoutDelegate);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_HARMONY_LAYOUT_DELEGATE_H_