MacViews: Gets a webview working in views_examples_with_content_exe

ui/message_center/views/message_popup_collection_unittest.cc

 // Copyright (c) 2013 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 "ui/message_center/views/message_popup_collection.h"
 
 #include <list>
 
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 13 matching lines @@
 namespace message_center {
 namespace test {
 
 class MessagePopupCollectionTest : public views::ViewsTestBase {
  public:
   virtual void SetUp() OVERRIDE {
     views::ViewsTestBase::SetUp();
     MessageCenter::Initialize();
     MessageCenter::Get()->DisableTimersForTest();
     alignment_delegate_.reset(new DesktopPopupAlignmentDelegate);
+
+    gfx::NativeView parent = NULL;
+#if defined(USE_ASH)
+    // On ChromeOS the parent is a special container window. In tests, provide
+    // the root window instead. Note on a Windows ash build the parent is later
+    // NULLed out, because the message center is managed in desktop mode only.
+    parent = GetContext();
+#endif
     collection_.reset(new MessagePopupCollection(
-        GetContext(), MessageCenter::Get(), NULL, alignment_delegate_.get()));
+        parent, MessageCenter::Get(), NULL, alignment_delegate_.get()));
     // This size fits test machines resolution and also can keep a few toasts
     // w/o ill effects of hitting the screen overflow. This allows us to assume
     // and verify normal layout of the toast stack.
     SetDisplayInfo(gfx::Rect(0, 0, 600, 390),  // taskbar at the bottom.
                    gfx::Rect(0, 0, 600, 400));
     id_ = 0;
     PrepareForWait();
   }
 
   virtual void TearDown() OVERRIDE {
@@ skipping 366 matching lines @@
   std::string id2 = AddNotification();
 
   WaitForTransitionsDone();
   views::WidgetDelegateView* toast2 = GetToast(id2);
   EXPECT_TRUE(toast2 != NULL);
 }
 
 
 }  // namespace test
 }  // namespace message_center