Adding application lifetime tests to athena, allowing to override focus request for applciations

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.h"
 #include "athena/content/app_activity_registry.h"
 #include "athena/wm/public/window_list_provider.h"
 #include "athena/wm/public/window_manager.h"
 #include "ui/aura/window.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/widget.h"
 #include "ui/wm/core/window_util.h"
 
 namespace athena {
 
 AppActivityProxy::AppActivityProxy(AppActivity* replaced_activity,
                                    AppActivityRegistry* creator) :
     app_activity_registry_(creator),
     title_(replaced_activity->GetActivityViewModel()->GetTitle()),
     color_(replaced_activity->GetActivityViewModel()->GetRepresentativeColor()),
     replaced_activity_(replaced_activity),
-    view_(new views::View()) {
+    view_(new views::View()),
+    restart_called_(false) {
 }
 
 AppActivityProxy::~AppActivityProxy() {
   app_activity_registry_->ProxyDestroyed(this);
 }
 
 ActivityViewModel* AppActivityProxy::GetActivityViewModel() {
   return this;
 }
 
 void AppActivityProxy::SetCurrentState(ActivityState state) {
-  // We only restart the application when we are switching to visible.
-  if (state != ACTIVITY_VISIBLE)
+  // We only restart the application when we are switching to visible, and only
+  // once.
+  if (state != ACTIVITY_VISIBLE || restart_called_)
     return;
+  restart_called_ = true;
   app_activity_registry_->RestartApplication(this);
   // Note: This object is now destroyed.
 }
 
 Activity::ActivityState AppActivityProxy::GetCurrentState() {
   return ACTIVITY_UNLOADED;
 }
 
 bool AppActivityProxy::IsVisible() {
   return false;
@@ skipping 57 matching lines @@
   return content_proxy_->GetContentImage();
 }
 
 void AppActivityProxy::PrepareContentsForOverview() {
 }
 
 void AppActivityProxy::ResetContentsView() {
 }
 
 }  // namespace athena