Convert tabcontentscontainer to use a vbox instead of a fixed. The

chrome/browser/tab_contents/tab_contents_view_gtk.cc

Index: chrome/browser/tab_contents/tab_contents_view_gtk.cc
diff --git a/chrome/browser/tab_contents/tab_contents_view_gtk.cc b/chrome/browser/tab_contents/tab_contents_view_gtk.cc
index a51aa10d2a00963bd4d33a3009d41bf34a146e15..715d573d76f7a6475760e0208cb6d7dc02cb0498 100644
--- a/chrome/browser/tab_contents/tab_contents_view_gtk.cc
+++ b/chrome/browser/tab_contents/tab_contents_view_gtk.cc
@@ -398,8 +398,6 @@ gboolean TabContentsViewGtk::OnSizeAllocate(GtkWidget* widget,
                                             TabContentsViewGtk* view) {
   int width = allocation->width;
   int height = allocation->height;
-  view->requested_size_.set_width(width);
-  view->requested_size_.set_height(height);
   // |delegate()| can be NULL here during browser teardown.
   if (view->tab_contents()->delegate())
     height += view->tab_contents()->delegate()->GetExtraRenderViewHeight();