[Layout API] Convert (most of) FrameSelection to use Document::layoutViewItem()

third_party/WebKit/Source/core/layout/api/LayoutViewItem.h

Index: third_party/WebKit/Source/core/layout/api/LayoutViewItem.h
diff --git a/third_party/WebKit/Source/core/layout/api/LayoutViewItem.h b/third_party/WebKit/Source/core/layout/api/LayoutViewItem.h
index f9e944dc6f02f804e278b4cace7b1f8b7b9eb6a9..f3b12428adddebc044794ac6e00c7b9be91f2255 100644
--- a/third_party/WebKit/Source/core/layout/api/LayoutViewItem.h
+++ b/third_party/WebKit/Source/core/layout/api/LayoutViewItem.h
@@ -80,6 +80,11 @@ public:
         return toView()->selectionBounds();
     }
 
+    void invalidatePaintForSelection()
+    {
+        return toView()->invalidatePaintForSelection();
+    }
+
 private:
     LayoutView* toView() { return toLayoutView(layoutObject()); }
     const LayoutView* toView() const { return toLayoutView(layoutObject()); }