IntersectionObserver: second cut.

third_party/WebKit/Source/core/frame/FrameView.h

Index: third_party/WebKit/Source/core/frame/FrameView.h
diff --git a/third_party/WebKit/Source/core/frame/FrameView.h b/third_party/WebKit/Source/core/frame/FrameView.h
index e704eaa21c4607bb040c4ae73f7b9a160c742869..4e8ece5ee0efa1b511b8d4012b406013a57cfb6a 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.h
+++ b/third_party/WebKit/Source/core/frame/FrameView.h
@@ -742,7 +742,7 @@ private:
     void setNeedsUpdateViewportIntersection();
     void updateViewportIntersectionsForSubtree();
     void updateViewportIntersectionIfNeeded();
-    void notifyIntersectionObservers();
+    void notifyRenderThrottlingObservers();
 
     LayoutSize m_size;
 
@@ -777,7 +777,7 @@ private:
     unsigned m_nestedLayoutCount;
     Timer<FrameView> m_postLayoutTasksTimer;
     Timer<FrameView> m_updateWidgetsTimer;
-    OwnPtr<CancellableTaskFactory> m_intersectionObserverNotificationFactory;
+    OwnPtr<CancellableTaskFactory> m_renderThrottlingObserverNotificationFactory;
 
     bool m_firstLayout;
     bool m_isTransparent;
@@ -881,6 +881,7 @@ private:
     //     +---[ scrollTranslation ]    Frame scrolling. This is going away in favor of Settings::rootLayerScrolls.
     RefPtr<TransformPaintPropertyNode> m_preTranslation;
     RefPtr<TransformPaintPropertyNode> m_scrollTranslation;
+
 };
 
 inline void FrameView::incrementVisuallyNonEmptyCharacterCount(unsigned count)