Hide fullscreen rotation jank

cc/trees/layer_tree_host_impl.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_IMPL_H_
 #define CC_TREES_LAYER_TREE_HOST_IMPL_H_
 
 #include <stddef.h>
 
 #include <bitset>
@@ skipping 433 matching lines @@
     return scroll_affects_scroll_handler_;
   }
   void QueueSwapPromiseForMainThreadScrollUpdate(
       std::unique_ptr<SwapPromise> swap_promise);
 
   bool IsActivelyScrolling() const;
 
   virtual void SetVisible(bool visible);
   bool visible() const { return visible_; }
 
+  virtual void SetIsFullscreen(bool is_fullscreen);
+
   void SetNeedsCommit() { client_->SetNeedsCommitOnImplThread(); }
   void SetNeedsOneBeginImplFrame();
   void SetNeedsRedraw();
 
   ManagedMemoryPolicy ActualManagedMemoryPolicy() const;
 
   void SetViewportSize(const gfx::Size& device_viewport_size);
   gfx::Size device_viewport_size() const { return device_viewport_size_; }
 
   const gfx::Transform& DrawTransform() const;
@@ skipping 311 matching lines @@
 
   // An object to implement the ScrollElasticityHelper interface and
   // hold all state related to elasticity. May be NULL if never requested.
   std::unique_ptr<ScrollElasticityHelper> scroll_elasticity_helper_;
 
   bool tile_priorities_dirty_;
 
   const LayerTreeSettings settings_;
   LayerTreeDebugState debug_state_;
   bool visible_;
+  bool is_fullscreen_ = false;
   ManagedMemoryPolicy cached_managed_memory_policy_;
 
   const bool is_synchronous_single_threaded_;
   TileManager tile_manager_;
   DecodedImageTracker decoded_image_tracker_;
 
   gfx::Vector2dF accumulated_root_overscroll_;
 
   bool pinch_gesture_active_;
   bool pinch_gesture_end_should_clear_scrolling_node_;
@@ skipping 84 matching lines @@
   bool touchpad_and_wheel_scroll_latching_enabled_;
 
   ImplThreadPhase impl_thread_phase_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_IMPL_H_