Modify the pure-views slider to reset on ESC.

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 2e7a21fc7b230eb5c704ff67edc6a5ecbb1a4c63..072b7371e3cd80006b5eb7125d7981043e48723f 100644
--- a/ui/views/controls/slider.h
+++ b/ui/views/controls/slider.h
@@ -57,8 +57,10 @@ class VIEWS_EXPORT Slider : public View,
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
   virtual bool OnMousePressed(const views::MouseEvent& event) OVERRIDE;
+  virtual void OnMouseReleased(const views::MouseEvent& event) OVERRIDE;
   virtual bool OnMouseDragged(const views::MouseEvent& event) OVERRIDE;
   virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
+  virtual bool AcceleratorPressed(const ui::Accelerator&) OVERRIDE;
 
   // ui::AnimationDelegate overrides:
   virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE;
@@ -70,8 +72,10 @@ class VIEWS_EXPORT Slider : public View,
 
   float value_;
   float animating_value_;
+  float original_value_;
   bool value_is_valid_;
   string16 accessible_name_;
+  bool esc_was_pressed_;
 
   DISALLOW_COPY_AND_ASSIGN(Slider);
 };