Rework the way Widget::Init works:

views/controls/menu/menu_host_gtk.cc

Index: views/controls/menu/menu_host_gtk.cc
===================================================================
--- views/controls/menu/menu_host_gtk.cc	(revision 83020)
+++ views/controls/menu/menu_host_gtk.cc	(working copy)
@@ -23,8 +23,7 @@
 // MenuHostGtk, public:
 
 MenuHostGtk::MenuHostGtk(internal::NativeMenuHostDelegate* delegate)
-    : WidgetGtk(WidgetGtk::TYPE_POPUP),
-      did_input_grab_(false),
+    : did_input_grab_(false),
       delegate_(delegate) {
 }
 
@@ -34,16 +33,6 @@
 ////////////////////////////////////////////////////////////////////////////////
 // MenuHostGtk, NativeMenuHost implementation:
 
-void MenuHostGtk::InitMenuHost(gfx::NativeWindow parent,
-                               const gfx::Rect& bounds) {
-  make_transient_to_parent();
-  WidgetGtk::Init(GTK_WIDGET(parent), bounds);
-  // Make sure we get destroyed when the parent is destroyed.
-  gtk_window_set_destroy_with_parent(GTK_WINDOW(GetNativeView()), TRUE);
-  gtk_window_set_type_hint(GTK_WINDOW(GetNativeView()),
-                           GDK_WINDOW_TYPE_HINT_MENU);
-}
-
 void MenuHostGtk::StartCapturing() {
   DCHECK(!did_input_grab_);
 
@@ -92,6 +81,15 @@
 ////////////////////////////////////////////////////////////////////////////////
 // MenuHostGtk, WidgetGtk overrides:
 
+void MenuHostGtk::InitNativeWidget(const Widget::CreateParams& params) {
+  make_transient_to_parent();
+  WidgetGtk::InitNativeWidget(params);
+  // Make sure we get destroyed when the parent is destroyed.
+  gtk_window_set_destroy_with_parent(GTK_WINDOW(GetNativeView()), TRUE);
+  gtk_window_set_type_hint(GTK_WINDOW(GetNativeView()),
+                           GDK_WINDOW_TYPE_HINT_MENU);
+}
+
 // TODO(beng): remove once MenuHost is-a Widget
 RootView* MenuHostGtk::CreateRootView() {
   return delegate_->CreateRootView();