Add missing views class names

ui/views/controls/slider.h

Index: ui/views/controls/slider.h
diff --git a/ui/views/controls/slider.h b/ui/views/controls/slider.h
index 22b1f127be6cf3acd25e43113994791330b260b8..afe7516b9c28b5c92c24be95d595f929fefab1df 100644
--- a/ui/views/controls/slider.h
+++ b/ui/views/controls/slider.h
@@ -47,6 +47,9 @@ class VIEWS_EXPORT SliderListener {
 
 class VIEWS_EXPORT Slider : public View, public gfx::AnimationDelegate {
  public:
+  // Internal class name.
+  static const char kViewClassName[];
+
   enum Orientation {
     HORIZONTAL,
     VERTICAL
@@ -94,6 +97,7 @@ class VIEWS_EXPORT Slider : public View, public gfx::AnimationDelegate {
   void OnSliderDragEnded();
 
   // views::View overrides:
+  const char* GetClassName() const override;
   gfx::Size GetPreferredSize() const override;
   void OnPaint(gfx::Canvas* canvas) override;
   bool OnMousePressed(const ui::MouseEvent& event) override;