Fix memory leak on Chromium OS Heapcheck and Chromium OS (valgrind)

ash/desktop_background/desktop_background_widget_controller.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/desktop_background/desktop_background_widget_controller.h"
 
 #include "ui/aura/root_window.h"
 #include "ui/views/widget/widget.h"
 
 DECLARE_WINDOW_PROPERTY_TYPE(ash::internal::DesktopBackgroundWidgetController*);
@@ skipping 37 matching lines @@
     views::Widget::ReparentNativeView(widget_->GetNativeView(),
         root_window->GetChildById(dest_container));
   } else if (layer_.get()) {
     ui::Layer* layer = layer_.get();
     root_window->GetChildById(src_container)->layer()->Remove(layer);
     root_window->GetChildById(dest_container)->layer()->Add(layer);
   }
 }
 
 ComponentWrapper::ComponentWrapper(
-    DesktopBackgroundWidgetController* component) : component_(component) {
+    DesktopBackgroundWidgetController* component) {
+  component_.reset(component);
+}
+
+DesktopBackgroundWidgetController* ComponentWrapper::GetComponent(
+    bool pass_ownership) {
+  if (pass_ownership)
+    return component_.release();
+  return component_.get();
 }
 
 }  // namespace internal
 }  // namespace ash