Slimming Paint phase 2 compositing algorithm plumbing & skeleton display list API.

Source/core/frame/FrameView.h

Index: Source/core/frame/FrameView.h
diff --git a/Source/core/frame/FrameView.h b/Source/core/frame/FrameView.h
index c4a749c3f60f2179d2bb4ad5f06e3243fc040e57..a11ea52a4d9f4232b3c6b86686bf9a297cf572a3 100644
--- a/Source/core/frame/FrameView.h
+++ b/Source/core/frame/FrameView.h
@@ -231,6 +231,8 @@ public:
     // Run all needed lifecycle stages. After calling this method, all frames will be in the lifecycle state PaintInvalidationClean.
     void updateAllLifecyclePhases();
 
+    void updateAllLifecyclePhasesIncludingPaint();
+
     // Computes the style, layout and compositing lifecycle stages if needed. After calling this method, all frames wil lbe in a lifecycle
     // state >= CompositingClean, and scrolling has been updated.
     void updateLifecycleToCompositingCleanPlusScrolling();
@@ -608,9 +610,11 @@ private:
     void setScrollOffset(const DoublePoint&, ScrollType) override;
 
     void updateAllLifecyclePhasesInternal();
+    void updateAllLifecyclePhasesIncludingPaintInternal();
     void invalidateTreeIfNeededRecursive();
     void scrollContentsIfNeededRecursive();
     void updateStyleAndLayoutIfNeededRecursive();
+    void paintAndComposite();
     void updatePostLifecycleData();
 
     void reset();