Make activities have a thick border when in overview mode part 1

athena/test/sample_activity.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 "athena/test/sample_activity.h"
 
 #include "ui/views/background.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/widget.h"
 
@@ skipping 62 matching lines @@
   return contents_view_;
 }
 
 void SampleActivity::CreateOverviewModeImage() {
 }
 
 gfx::ImageSkia SampleActivity::GetOverviewModeImage() {
   return gfx::ImageSkia();
 }
 
+void SampleActivity::PrepareContentsForOverview() {
+}
+
+void SampleActivity::ResetContentsView() {
+}
+
 }  // namespace test
 }  // namespace athena