New AppListView Scroll Behavior.

ui/app_list/views/app_list_page.cc

Index: ui/app_list/views/app_list_page.cc
diff --git a/ui/app_list/views/app_list_page.cc b/ui/app_list/views/app_list_page.cc
index 8a7b6f3bd9dbc7224afee42b13ec531301d19b34..9799f94a3cd6cc8770e294c65a96f96f439043af 100644
--- a/ui/app_list/views/app_list_page.cc
+++ b/ui/app_list/views/app_list_page.cc
@@ -10,32 +10,25 @@ namespace {
 
 // The default z height for the search box.
 const int kDefaultSearchBoxZHeight = 2;
-}
+}  // namespace
 
 namespace app_list {
 
-AppListPage::AppListPage() : contents_view_(nullptr) {
-}
+AppListPage::AppListPage() : contents_view_(nullptr) {}
 
-AppListPage::~AppListPage() {
-}
+AppListPage::~AppListPage() {}
 
-void AppListPage::OnShown() {
-}
+void AppListPage::OnShown() {}
 
-void AppListPage::OnWillBeShown() {
-}
+void AppListPage::OnWillBeShown() {}
 
-void AppListPage::OnHidden() {
-}
+void AppListPage::OnHidden() {}
 
-void AppListPage::OnWillBeHidden() {
-}
+void AppListPage::OnWillBeHidden() {}
 
 void AppListPage::OnAnimationUpdated(double progress,
                                      AppListModel::State from_state,
-                                     AppListModel::State to_state) {
-}
+                                     AppListModel::State to_state) {}
 
 gfx::Rect AppListPage::GetSearchBoxBounds() const {
   DCHECK(contents_view_);
@@ -71,4 +64,9 @@ gfx::Rect AppListPage::GetDefaultContentsBounds() const {
   return contents_view_->GetDefaultContentsBounds();
 }
 
+bool AppListPage::IsCustomLauncherPageActive() const {
+  return contents_view_->IsStateActive(
+      AppListModel::STATE_CUSTOM_LAUNCHER_PAGE);
+}
+
 }  // namespace app_list