Expose FS show/hide thresholds to Command Line

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 a6900038625d1a38964a44812612dfa8894a80b4..5c3eced19e4e5944365a0183ef9202b0c122d7c7 100644
--- a/cc/top_controls_manager.h
+++ b/cc/top_controls_manager.h
@@ -30,8 +30,11 @@ class CC_EXPORT TopControlsManager {
     HIDING_CONTROLS
   };
 
-  static scoped_ptr<TopControlsManager> Create(TopControlsManagerClient* client,
-                                               float top_controls_height);
+  static scoped_ptr<TopControlsManager> Create(
+      TopControlsManagerClient* client,
+      float top_controls_height,
+      float top_controls_show_threshold,
+      float top_controls_hide_threshold);
   virtual ~TopControlsManager();
 
   float controls_top_offset() { return controls_top_offset_; }
@@ -52,7 +55,9 @@ class CC_EXPORT TopControlsManager {
 
  protected:
   TopControlsManager(TopControlsManagerClient* client,
-                     float top_controls_height);
+                     float top_controls_height,
+                     float top_controls_show_threshold,
+                     float top_controls_hide_threshold);
 
  private:
   gfx::Vector2dF ScrollInternal(const gfx::Vector2dF pending_delta);
@@ -67,6 +72,8 @@ class CC_EXPORT TopControlsManager {
 
   scoped_ptr<KeyframedFloatAnimationCurve> top_controls_animation_;
   AnimationDirection animation_direction_;
+  float top_controls_show_threshold_;
+  float top_controls_hide_threshold_;

[Ted C, 2013/02/07 00:40:26]

I would put the floats below with the other ones.  Although we might want to
split configuration vs state variables with a space, but not necessarily.

[David Trainor- moved to gerrit, 2013/02/11 19:38:28]

Done.

   bool is_overlay_mode_;
   bool in_scroll_gesture_;
   float controls_top_offset_;
@@ -74,6 +81,7 @@ class CC_EXPORT TopControlsManager {
   float top_controls_height_;
   float previous_root_scroll_offset_;
   float scroll_start_offset_;
+  float current_scroll_delta_;
 
   DISALLOW_COPY_AND_ASSIGN(TopControlsManager);
 };