Hide fullscreen rotation jank

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 40429d51814846c69671b3bce27a1af955e1452b..c3fd4cd84d14798fab3670d9f22d46818fa834c9 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -2032,6 +2032,13 @@ void WebContentsImpl::EnterFullscreenMode(const GURL& origin) {
   if (delegate_)
     delegate_->EnterFullscreenModeForTab(this, origin);
 
+#if defined(OS_ANDROID)
+  RenderWidgetHostViewAndroid* rwhva =
+      static_cast<RenderWidgetHostViewAndroid*>(GetRenderWidgetHostView());
+  if (rwhva)
+    rwhva->OnFullscreenStateChanged(true);
+#endif
+
   for (auto& observer : observers_)
     observer.DidToggleFullscreenModeForTab(IsFullscreenForCurrentTab(), false);
 }
@@ -2049,6 +2056,11 @@ void WebContentsImpl::ExitFullscreenMode(bool will_cause_resize) {
   ContentVideoView* video_view = ContentVideoView::GetInstance();
   if (video_view != NULL)
     video_view->ExitFullscreen();
+
+  RenderWidgetHostViewAndroid* rwhva =
+      static_cast<RenderWidgetHostViewAndroid*>(GetRenderWidgetHostView());
+  if (rwhva)
+    rwhva->OnFullscreenStateChanged(false);
 #endif
 
   if (delegate_)