Get FileSelect dialog work on athena

chrome/browser/ui/views/athena/athena_util.cc

+// Copyright 2014 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 "chrome/browser/ui/views/athena/athena_util.h"
+
+#include "athena/activity/public/activity.h"
+#include "athena/activity/public/activity_manager.h"
+#include "athena/wm/public/window_list_provider.h"
+#include "athena/wm/public/window_manager.h"
+
+content::WebContents* GetWebContentsForWindow(aura::Window* owner_window) {
+  if (!owner_window) {
+    athena::WindowListProvider* window_list =
+        athena::WindowManager::Get()->GetWindowListProvider();
+    DCHECK(window_list->GetWindowList().size());
+    owner_window = window_list->GetWindowList().back();
+  }
+  athena::Activity* activity =
+      athena::ActivityManager::Get()->GetActivityForWindow(owner_window);
+  return activity->GetWebContents();
+}