Don't include headers from the layout API from other headers needlessly.

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

Index: third_party/WebKit/Source/core/frame/FrameView.cpp
diff --git a/third_party/WebKit/Source/core/frame/FrameView.cpp b/third_party/WebKit/Source/core/frame/FrameView.cpp
index 1c1cd08ef96cd70a535ab4a10241e537f9f35fe9..98b086e6bdfc5f1c2f43e46096bccc614c0ea890 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameView.cpp
@@ -448,6 +448,11 @@ LayoutView* FrameView::layoutView() const
     return frame().contentLayoutObject();
 }
 
+LayoutViewItem FrameView::layoutViewItem() const
+{
+    return LayoutViewItem(frame().contentLayoutObject());
+}
+
 ScrollingCoordinator* FrameView::scrollingCoordinator() const
 {
     Page* p = page();
@@ -460,6 +465,11 @@ CompositorAnimationTimeline* FrameView::compositorAnimationTimeline() const
     return c ? c->compositorAnimationTimeline() : nullptr;
 }
 
+LayoutBox* FrameView::layoutBox() const
+{
+    return layoutView();
+}
+
 void FrameView::setCanHaveScrollbars(bool canHaveScrollbars)
 {
     m_canHaveScrollbars = canHaveScrollbars;