Makes Separator more configurable.

ui/views/controls/separator.h

Index: ui/views/controls/separator.h
diff --git a/ui/views/controls/separator.h b/ui/views/controls/separator.h
index 39004baf378e41b7c839d7199cb4da9fb8d37430..d30e01b99b20c5a90d2cd6116ae37256ca6b8549 100644
--- a/ui/views/controls/separator.h
+++ b/ui/views/controls/separator.h
@@ -27,6 +27,14 @@ class VIEWS_EXPORT Separator : public View {
   explicit Separator(Orientation orientation);
   ~Separator() override;
 
+  SkColor color() const { return color_; }
+  void SetColor(SkColor color);
+
+  int size() const { return size_; }
+  // Preferred size of one axis: height for horizontal separator
+  // and width for vertical separator
+  void SetPreferredSize(int size);
+
   // Overridden from View:
   gfx::Size GetPreferredSize() const override;
   void GetAccessibleState(ui::AXViewState* state) override;
@@ -35,6 +43,8 @@ class VIEWS_EXPORT Separator : public View {
 
  private:
   const Orientation orientation_;
+  SkColor color_;
+  int size_;
 
   DISALLOW_COPY_AND_ASSIGN(Separator);
 };