Context menus should appear above the touch point if invoked by long press.

content/browser/web_contents/web_contents_view_win.cc

Index: content/browser/web_contents/web_contents_view_win.cc
diff --git a/content/browser/web_contents/web_contents_view_win.cc b/content/browser/web_contents/web_contents_view_win.cc
index c08ea768d779c8e949da08560bbb80ebe4e62daf..d6266374bd98a1c5615846337ea0c643496834a6 100644
--- a/content/browser/web_contents/web_contents_view_win.cc
+++ b/content/browser/web_contents/web_contents_view_win.cc
@@ -264,9 +264,10 @@ gfx::Rect WebContentsViewWin::GetViewBounds() const {
 }
 
 void WebContentsViewWin::ShowContextMenu(
-    const content::ContextMenuParams& params) {
+    const content::ContextMenuParams& params,
+    const content::ContextMenuSourceType& type) {
   if (delegate_.get())
-    delegate_->ShowContextMenu(params);
+    delegate_->ShowContextMenu(params, type);
 }
 
 void WebContentsViewWin::ShowPopupMenu(const gfx::Rect& bounds,