Hide location bar on WebKit programmatic scroll.

cc/trees/layer_tree_host.h

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_TREES_LAYER_TREE_HOST_H_
 #define CC_TREES_LAYER_TREE_HOST_H_
 
 #include <limits>
 #include <vector>
 
@@ skipping 207 matching lines @@
   bool buffered_updates() const {
     return settings_.max_partial_texture_updates !=
         std::numeric_limits<size_t>::max();
   }
   bool RequestPartialTextureUpdate();
 
   void SetDeviceScaleFactor(float device_scale_factor);
   float device_scale_factor() const { return device_scale_factor_; }
 
   void EnableHidingTopControls(bool enable);
+  void ShowTopControls(bool show);
 
   HeadsUpDisplayLayer* hud_layer() const { return hud_layer_.get(); }
 
   Proxy* proxy() const { return proxy_.get(); }
 
   AnimationRegistrar* animation_registrar() const {
     return animation_registrar_.get();
   }
 
   skia::RefPtr<SkPicture> CapturePicture();
@@ skipping 96 matching lines @@
     base::TimeDelta duration;
   };
   scoped_ptr<PendingPageScaleAnimation> pending_page_scale_animation_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_H_