Throttle rendering pipeline for invisible iframes

Source/core/frame/LocalFrame.cpp

Index: Source/core/frame/LocalFrame.cpp
diff --git a/Source/core/frame/LocalFrame.cpp b/Source/core/frame/LocalFrame.cpp
index 3c353cd186d56380367a5584bbf36e03c8226c7c..c46b321c9bd5f77e868b09f5e945a54165285285 100644
--- a/Source/core/frame/LocalFrame.cpp
+++ b/Source/core/frame/LocalFrame.cpp
@@ -836,6 +836,16 @@ String LocalFrame::localLayerTreeAsText(unsigned flags) const
     return contentLayoutObject()->compositor()->layerTreeAsText(static_cast<LayerTreeFlags>(flags));
 }
 
+bool LocalFrame::shouldThrottleRenderingPipeline() const
+{
+    return view() && view()->shouldThrottleRenderingPipeline();
+}
+
+bool LocalFrame::shouldThrottleStyleLayoutAndCompositingUpdates() const
+{
+    return view() && view()->shouldThrottleStyleLayoutAndCompositingUpdates();
+}
+
 inline LocalFrame::LocalFrame(FrameLoaderClient* client, FrameHost* host, FrameOwner* owner)
     : Frame(client, host, owner)
     , m_loader(this)