Revert of Pinch/Zoom Infrastructure & Plumbing CL

cc/trees/layer_tree_host.h

Index: cc/trees/layer_tree_host.h
diff --git a/cc/trees/layer_tree_host.h b/cc/trees/layer_tree_host.h
index a1f26cce87d2146f907eb669fe558c5bfbf91a87..867bb197caf29fcea3537656c958fc85f615ad14 100644
--- a/cc/trees/layer_tree_host.h
+++ b/cc/trees/layer_tree_host.h
@@ -195,12 +195,6 @@
       scoped_refptr<Layer> page_scale_layer,
       scoped_refptr<Layer> inner_viewport_scroll_layer,
       scoped_refptr<Layer> outer_viewport_scroll_layer);
-  Layer* inner_viewport_scroll_layer() const {
-    return inner_viewport_scroll_layer_.get();
-  }
-  Layer* outer_viewport_scroll_layer() const {
-    return outer_viewport_scroll_layer_.get();
-  }
 
   const LayerTreeSettings& settings() const { return settings_; }
 
@@ -241,8 +235,6 @@
                                base::TimeDelta duration);
 
   void ApplyScrollAndScale(const ScrollAndScaleSet& info);
-  gfx::Vector2d DistributeScrollOffsetToViewports(const gfx::Vector2d offset,
-                                                  Layer* layer);
 
   void SetImplTransform(const gfx::Transform& transform);