Allows fullscreen to be triggered with the key events used for scrolling.

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 219 matching lines @@
         std::numeric_limits<size_t>::max();
   }
   bool RequestPartialTextureUpdate();
 
   void SetDeviceScaleFactor(float device_scale_factor);
   float device_scale_factor() const { return device_scale_factor_; }
 
   void UpdateTopControlsState(TopControlsState constraints,
                               TopControlsState current,
                               bool animate);
+  void UpdateTopControlsStatePreservingConstraints(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();
 
   bool BlocksPendingCommit() const;
 
   // Obtains a thorough dump of the LayerTreeHost as a value.
   scoped_ptr<base::Value> AsValue() const;
 
   bool in_paint_layer_contents() const { return in_paint_layer_contents_; }
 
+
   void IncrementLCDTextMetrics(
       bool update_total_num_cc_layers_can_use_lcd_text,
       bool update_total_num_cc_layers_will_use_lcd_text);
 
  protected:
   LayerTreeHost(LayerTreeHostClient* client, const LayerTreeSettings& settings);
   bool Initialize(scoped_ptr<Thread> impl_thread);
   bool InitializeForTesting(scoped_ptr<Proxy> proxy_for_testing);
 
  private:
@@ skipping 96 matching lines @@
     int64 total_num_cc_layers_will_use_lcd_text;
   };
   LCDTextMetrics lcd_text_metrics_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_H_