Move movie GainFocus/LoseFocus handling to Sprite. Visualizations are part of Background, not BGAnimation; move them there. Remove BGAnimation::LoadFromVisualization and BGAnimationLayer::LoadFromVisualization.
Move movie GainFocus/LoseFocus handling to Sprite. Visualizations are part of Background, not BGAnimation; move them there. Remove BGAnimation::LoadFromVisualization and BGAnimationLayer::LoadFromVisualization.