Hide fullscreen rotation jank

cc/trees/layer_tree_host.cc

 // 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.
 
 #include "cc/trees/layer_tree_host.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 531 matching lines @@
   if (visible_ == visible)
     return;
   visible_ = visible;
   proxy_->SetVisible(visible);
 }
 
 bool LayerTreeHost::IsVisible() const {
   return visible_;
 }
 
+void LayerTreeHost::SetIsFullscreen(bool is_fullscreen) {
+  if (is_fullscreen_ == is_fullscreen)
+    return;
+  is_fullscreen_ = is_fullscreen;
+  proxy_->SetIsFullscreen(is_fullscreen);
+}
+
 void LayerTreeHost::NotifyInputThrottledUntilCommit() {
   proxy_->NotifyInputThrottledUntilCommit();
 }
 
 void LayerTreeHost::LayoutAndUpdateLayers() {
   DCHECK(IsSingleThreaded());
   // This function is only valid when not using the scheduler.
   DCHECK(!settings_.single_thread_proxy_scheduler);
   RequestMainFrameUpdate();
   UpdateLayers();
@@ skipping 881 matching lines @@
 void LayerTreeHost::SetNeedsDisplayOnAllLayers() {
   for (auto* layer : *this)
     layer->SetNeedsDisplay();
 }
 
 void LayerTreeHost::SetHasCopyRequest(bool has_copy_request) {
   has_copy_request_ = has_copy_request;
 }
 
 }  // namespace cc