Decoupling visibility states from webcontent, adding visibility management in ResourceManager

athena/home/home_card_impl.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/home/home_card_impl.h"
 
 #include <cmath>
 #include <limits>
 
 #include "athena/common/container_priorities.h"
@@ skipping 400 matching lines @@
 
 void HomeCardImpl::OnOverviewModeEnter() {
   if (state_ == VISIBLE_MINIMIZED)
     SetState(VISIBLE_BOTTOM);
 }
 
 void HomeCardImpl::OnOverviewModeExit() {
   SetState(VISIBLE_MINIMIZED);
 }
 
-void HomeCardImpl::OnActivityOrderHasChanged() {
+void HomeCardImpl::OnSplitViewModeEnter() {
+}
+
+void HomeCardImpl::OnSplitViewModeExit() {
 }
 
 void HomeCardImpl::OnWindowActivated(aura::Window* gained_active,
                                      aura::Window* lost_active) {
   if (state_ != HIDDEN &&
       gained_active != home_card_widget_->GetNativeWindow()) {
     SetState(VISIBLE_MINIMIZED);
   }
 }
 
@@ skipping 11 matching lines @@
   instance = NULL;
 }
 
 // static
 HomeCard* HomeCard::Get() {
   DCHECK(instance);
   return instance;
 }
 
 }  // namespace athena