Check for a null callback in RendererSurfaceViewManager

content/renderer/media/android/renderer_surface_view_manager.cc

Index: content/renderer/media/android/renderer_surface_view_manager.cc
diff --git a/content/renderer/media/android/renderer_surface_view_manager.cc b/content/renderer/media/android/renderer_surface_view_manager.cc
index a405a4aa103538e33339cc2cd289adf1efe97b34..48fd548c5acc46e2bb6d39636277a33885cf01be 100644
--- a/content/renderer/media/android/renderer_surface_view_manager.cc
+++ b/content/renderer/media/android/renderer_surface_view_manager.cc
@@ -42,9 +42,10 @@ void RendererSurfaceViewManager::NaturalSizeChanged(const gfx::Size& size) {
 
 void RendererSurfaceViewManager::OnFullscreenSurfaceCreated(int surface_id) {
   DVLOG(3) << __FUNCTION__ << ": surface_id: " << surface_id;
-  DCHECK(!pending_surface_created_cb_.is_null());
-  pending_surface_created_cb_.Run(surface_id);
-  pending_surface_created_cb_.Reset();
+  if (!pending_surface_created_cb_.is_null()) {
+    pending_surface_created_cb_.Run(surface_id);
+    pending_surface_created_cb_.Reset();
+  }
 }
 
 void RendererSurfaceViewManager::OnDestruct() {