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

cc/input/top_controls_manager.h

 // Copyright 2013 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_INPUT_TOP_CONTROLS_MANAGER_H_
 #define CC_INPUT_TOP_CONTROLS_MANAGER_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "cc/input/top_controls_state.h"
@@ skipping 30 matching lines @@
 
   float controls_top_offset() { return controls_top_offset_; }
   float content_top_offset() {
     return controls_top_offset_ + top_controls_height_;
   }
   KeyframedFloatAnimationCurve* animation() {
     return top_controls_animation_.get();
   }
   AnimationDirection animation_direction() { return animation_direction_; }
 
+  void UpdateTopControlsStatePreservingConstraints(
+      TopControlsState current,
+      bool animate);
   void UpdateTopControlsState(TopControlsState constraints,
                               TopControlsState current,
                               bool animate);
 
   void ScrollBegin();
   gfx::Vector2dF ScrollBy(const gfx::Vector2dF pending_delta);
   void ScrollEnd();
 
   gfx::Vector2dF Animate(base::TimeTicks monotonic_time);
 
@@ skipping 29 matching lines @@
   // The height of the visible top control such that it must be hidden when
   // the user stops the scroll.
   float top_controls_hide_height_;
 
   DISALLOW_COPY_AND_ASSIGN(TopControlsManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_INPUT_TOP_CONTROLS_MANAGER_H_