Rework the way Widget::Init works:

chrome/browser/ui/views/tab_contents/tab_contents_view_gtk.cc

Index: chrome/browser/ui/views/tab_contents/tab_contents_view_gtk.cc
===================================================================
--- chrome/browser/ui/views/tab_contents/tab_contents_view_gtk.cc	(revision 83020)
+++ chrome/browser/ui/views/tab_contents/tab_contents_view_gtk.cc	(working copy)
@@ -103,7 +103,6 @@
 
 TabContentsViewGtk::TabContentsViewGtk(TabContents* tab_contents)
     : TabContentsView(tab_contents),
-      views::WidgetGtk(TYPE_CHILD),
       sad_tab_(NULL),
       ignore_next_char_event_(false) {
   drag_source_.reset(new TabContentsDragSource(this));
@@ -150,9 +149,10 @@
 }
 
 void TabContentsViewGtk::CreateView(const gfx::Size& initial_size) {
-  set_delete_on_destroy(false);
-  WidgetGtk::Init(NULL, gfx::Rect(0, 0, initial_size.width(),
-                                  initial_size.height()));
+  views::Widget::CreateParams params(views::Widget::CreateParams::TYPE_CONTROL);
+  params.delete_on_destroy = false;
+  params.bounds = gfx::Rect(initial_size);
+  GetWidget()->Init(params);
   // We need to own the widget in order to attach/detach the native view
   // to container.
   gtk_object_ref(GTK_OBJECT(GetNativeView()));