Refactor ViewsDelegate and MD-ify the icon-to-text spacing for checkbox and radiobutton

chrome/browser/ui/views/chrome_views_delegate.h

Index: chrome/browser/ui/views/chrome_views_delegate.h
diff --git a/chrome/browser/ui/views/chrome_views_delegate.h b/chrome/browser/ui/views/chrome_views_delegate.h
index d3ad432b2a9420ae7884789c7c9979b4d64ec347..6669f7d7a535c145d608dfd6b1d88e00001a89f4 100644
--- a/chrome/browser/ui/views/chrome_views_delegate.h
+++ b/chrome/browser/ui/views/chrome_views_delegate.h
@@ -62,12 +62,8 @@ class ChromeViewsDelegate : public views::ViewsDelegate {
 #endif
   scoped_refptr<base::TaskRunner> GetBlockingPoolTaskRunner() override;
 
-  gfx::Insets GetDialogButtonInsets() const override;
-  int GetDialogCloseButtonMargin() const override;
-  int GetDialogRelatedButtonHorizontalSpacing() const override;
-  int GetDialogRelatedControlVerticalSpacing() const override;
-  gfx::Insets GetDialogFrameViewInsets() const override;
-  gfx::Insets GetBubbleDialogMargins() const override;
+  gfx::Insets GetInsetsMetric(InsetsMetric metric) const override;
+  int GetSpacingMetric(SpacingMetric metric) const override;
 
  private:
 #if defined(OS_WIN)