Force the video to go fullscreen when setting persistent video

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 d8bdf2f26bda627ec589ecf4d6eb7989e2938b69..7b067a67bcc8f1359a6c8c8d9724fb0d2ce8b58d 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -5247,12 +5247,13 @@ void WebContentsImpl::DecrementBluetoothConnectedDeviceCount() {
   }
 }
 
-void WebContentsImpl::SetHasPersistentVideo(bool value) {
-  if (has_persistent_video_ == value)
+void WebContentsImpl::SetHasPersistentVideo(bool has_persistent_video) {
+  if (has_persistent_video_ == has_persistent_video)
     return;
 
-  has_persistent_video_ = value;
+  has_persistent_video_ = has_persistent_video;
   NotifyPreferencesChanged();
+  media_web_contents_observer()->RequestPersistentVideo(has_persistent_video);
 }
 
 #if defined(OS_ANDROID)