Revert of Don't use webmediaplayer to inform webview about fullscreen change

content/browser/media/android/browser_media_player_manager.cc

Index: content/browser/media/android/browser_media_player_manager.cc
diff --git a/content/browser/media/android/browser_media_player_manager.cc b/content/browser/media/android/browser_media_player_manager.cc
index b4f5edbb8db51e4fd6e935f82839374fb72389de..b4a71e89ae150a93837beaabc5b506faf57ae9ef 100644
--- a/content/browser/media/android/browser_media_player_manager.cc
+++ b/content/browser/media/android/browser_media_player_manager.cc
@@ -199,10 +199,10 @@
 }
 
 void BrowserMediaPlayerManager::ExitFullscreen(bool release_media_player) {
-  if (WebContentsDelegate* delegate = web_contents_->GetDelegate())
-    delegate->ToggleFullscreenModeForTab(web_contents_, false);
   if (!CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kDisableOverlayFullscreenVideoSubtitle)) {
+    if (WebContentsDelegate* delegate = web_contents_->GetDelegate())
+      delegate->ToggleFullscreenModeForTab(web_contents_, false);
     if (RenderWidgetHostViewAndroid* view_android =
         static_cast<RenderWidgetHostViewAndroid*>(
             web_contents_->GetRenderWidgetHostView())) {
@@ -251,6 +251,8 @@
           web_contents_->GetRenderWidgetHostView())) {
     view_android->SetOverlayVideoMode(true);
   }
+  if (WebContentsDelegate* delegate = web_contents_->GetDelegate())
+    delegate->ToggleFullscreenModeForTab(web_contents_, true);
 }
 
 void BrowserMediaPlayerManager::OnMediaMetadataChanged(