Hide location bar on WebKit programmatic scroll.

cc/top_controls_manager.h

Index: cc/top_controls_manager.h
diff --git a/cc/top_controls_manager.h b/cc/top_controls_manager.h
index 6ecd352e03c9c7800398c22ed0c7f7e0b110d3f5..5f7ec3fc12a599f6f69904a0867fc7e8c9ea65d7 100644
--- a/cc/top_controls_manager.h
+++ b/cc/top_controls_manager.h
@@ -42,14 +42,14 @@ class CC_EXPORT TopControlsManager {
   }
   AnimationDirection animation_direction() { return animation_direction_; }
 
-  void UpdateDrawPositions();
-
   void ScrollBegin();
   gfx::Vector2dF ScrollBy(const gfx::Vector2dF pending_delta);
   void ScrollEnd();
 
   void Animate(base::TimeTicks monotonic_time);
 
+  void ProgrammaticScroll(gfx::Vector2d targetOffset);
+
  protected:
   TopControlsManager(TopControlsManagerClient* client,
                      float top_controls_height);
@@ -68,11 +68,10 @@ class CC_EXPORT TopControlsManager {
   scoped_ptr<KeyframedFloatAnimationCurve> top_controls_animation_;
   AnimationDirection animation_direction_;
   bool is_overlay_mode_;
-  bool scroll_readjustment_enabled_;
   float controls_top_offset_;
   float content_top_offset_;
   float top_controls_height_;
-  float previous_root_scroll_offset_;
+  bool in_user_scroll_;
 
   DISALLOW_COPY_AND_ASSIGN(TopControlsManager);
 };