Hide fullscreen rotation jank

content/browser/renderer_host/render_widget_host_view_base.h

Index: content/browser/renderer_host/render_widget_host_view_base.h
diff --git a/content/browser/renderer_host/render_widget_host_view_base.h b/content/browser/renderer_host/render_widget_host_view_base.h
index 0e159d7410802d74f3e139fb2e5d4aed8d4614d4..2a847b739a7bbca6035cf593ca0f5dee2744b825 100644
--- a/content/browser/renderer_host/render_widget_host_view_base.h
+++ b/content/browser/renderer_host/render_widget_host_view_base.h
@@ -400,6 +400,9 @@ class CONTENT_EXPORT RenderWidgetHostViewBase : public RenderWidgetHostView,
   // main frame.
   virtual void OnDidNavigateMainFrameToNewPage();
 
+  // Called by the WebContentsImpl when the fullscreen state is changed.
+  virtual void OnFullscreenStateChanged() {}
+
   // Called by WebContentsImpl to notify the view about a change in visibility
   // of context menu. The view can then perform platform specific tasks and
   // changes.