Scroll offset pinning and content size notifications were only used for the Mac overlay navigation …

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 1866bb8b33105056a6b1fbb2698d9010aef8f515..e56a4b7de26575be254096d77870786d6a71d193 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -2684,23 +2684,6 @@ void RenderFrameImpl::didFirstVisuallyNonEmptyLayout(
 #endif
 }
 
-void RenderFrameImpl::didChangeContentsSize(blink::WebLocalFrame* frame,
-                                            const blink::WebSize& size) {
-  DCHECK(!frame_ || frame_ == frame);
-#if defined(OS_MACOSX)
-  if (frame->parent())
-    return;
-
-  WebView* frameView = frame->view();
-  if (!frameView)
-    return;
-
-  GetRenderWidget()->DidChangeScrollbarsForMainFrame(
-      frame->hasHorizontalScrollbar(),
-      frame->hasVerticalScrollbar());
-#endif  // defined(OS_MACOSX)
-}
-
 void RenderFrameImpl::didChangeScrollOffset(blink::WebLocalFrame* frame) {
   DCHECK(!frame_ || frame_ == frame);
   // TODO(nasko): Move implementation here. Needed methods: