CanvasTranslator::RemoveTexture delayed the call to RemoveDrawTarget till all keepalives are
gone. However, this may take place long after RecordedTextureDestruction actually called
RemoveTexture. This gives time for subsequent DrawTargets with the same ReferencePtr to be
created, causing the wrong DrawTargets to be removed.
This patch ensures that when RemoveTexture is called from a RecordedTextureDestruction event
that the DrawTarget is always removed then and there, rather than waiting.
Differential Revision: https://phabricator.services.mozilla.com/D265867
1d97d5f6f4