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

athena/content/app_activity_proxy.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/content/app_activity_proxy.h"
 
 #include "athena/content/app_activity_registry.h"
 #include "ui/aura/window.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/widget.h"
@@ skipping 72 matching lines @@
 }
 
 void AppActivityProxy::CreateOverviewModeImage() {
   // Nothing we can do here.
 }
 
 gfx::ImageSkia AppActivityProxy::GetOverviewModeImage() {
   return image_;
 }
 
+void AppActivityProxy::PrepareContentsForOverview() {
+}
+
+void AppActivityProxy::ResetContentsView() {
+}
+
 }  // namespace athena