RenderText: Allow strike-through line thickness to be customized.

chrome/browser/android/vr_shell/textures/render_text_wrapper.h

 // Copyright 2017 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_ANDROID_VR_SHELL_TEXTURES_RENDER_TEXT_WRAPPER_H_
 #define CHROME_BROWSER_ANDROID_VR_SHELL_TEXTURES_RENDER_TEXT_WRAPPER_H_
 
 #include "base/macros.h"
 #include "ui/gfx/render_text.h"
 
 namespace vr_shell {
 
 // A minimal, mockable wrapper around gfx::RenderText, to facilitate testing of
 // RenderText users.
 class RenderTextWrapper {
  public:
   explicit RenderTextWrapper(gfx::RenderText* render_text);
   virtual ~RenderTextWrapper();
 
   virtual void SetColor(SkColor value);
   virtual void ApplyColor(SkColor value, const gfx::Range& range);
 
   virtual void SetStyle(gfx::TextStyle style, bool value);
   virtual void ApplyStyle(gfx::TextStyle style,
                           bool value,
                           const gfx::Range& range);
 
+  virtual void SetStrikeThicknessFactor(SkScalar factor);
+
  private:
   gfx::RenderText* render_text_ = nullptr;
 
   DISALLOW_COPY_AND_ASSIGN(RenderTextWrapper);
 };
 
 }  // namespace vr_shell
 
 #endif  // CHROME_BROWSER_ANDROID_VR_SHELL_TEXTURES_RENDER_TEXT_WRAPPER_H_