Stack preview back at top after an active contents switch.

chrome/browser/ui/views/frame/contents_container.cc

Index: chrome/browser/ui/views/frame/contents_container.cc
diff --git a/chrome/browser/ui/views/frame/contents_container.cc b/chrome/browser/ui/views/frame/contents_container.cc
index 26c67000295a9fb3882a3109731b60278d6b8a0e..c3519857c9f03d2153bef689519993a2bb60aeca 100644
--- a/chrome/browser/ui/views/frame/contents_container.cc
+++ b/chrome/browser/ui/views/frame/contents_container.cc
@@ -54,6 +54,14 @@ void ContentsContainer::SetPreview(views::WebView* preview,
   Layout();
 }
 
+void ContentsContainer::MaybeStackPreviewAtTop() {
+  if (preview_) {
+    RemoveChildView(preview_);

[sky, 2012/11/29 20:57:55]

Will this result in sending a bunch of messages to the preview_? Such as perhaps
its been hidden then removed?

+    AddChildView(preview_);
+    Layout();
+  }
+}
+
 void ContentsContainer::SetActiveTopMargin(int margin) {
   if (active_top_margin_ == margin)
     return;