Add a skeleton Start Page to the experimental app list.

ui/app_list/views/contents_view.h

 // Copyright (c) 2012 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.
 
 #ifndef UI_APP_LIST_VIEWS_CONTENTS_VIEW_H_
 #define UI_APP_LIST_VIEWS_CONTENTS_VIEW_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 11 matching lines @@
 namespace app_list {
 
 class AppsGridView;
 class ApplicationDragAndDropHost;
 class AppListFolderItem;
 class AppListMainView;
 class AppListModel;
 class AppListViewDelegate;
 class AppsContainerView;
 class PaginationModel;
+class StartPageView;
 
 // A view to manage sub views under the search box (apps grid view + page
 // switcher and search results). The two sets of sub views are mutually
 // exclusive. ContentsView manages a show state to choose one set to show
 // and animates the transition between show states.
 class ContentsView : public views::View {
  public:
   enum ShowState {
     SHOW_APPS,
     SHOW_SEARCH_RESULTS,
+    SHOW_START_PAGE,

[tapted, 2014/03/10 02:41:54]

Maybe go with SHOW_SEARCH_PAGE? I don't think we should mix the meanings of the
current search page unless we are ready to replace it completely.

[calamity, 2014/03/14 07:50:02]

See below.

   };
 
   ContentsView(AppListMainView* app_list_main_view,
                PaginationModel* pagination_model,
                AppListModel* model,
                AppListViewDelegate* view_delegate);
   virtual ~ContentsView();
 
   // The app list gets closed and drag and drop operations need to be cancelled.
   void CancelDrag();
@@ skipping 27 matching lines @@
   void AnimateToIdealBounds();
 
   // Overridden from ui::EventHandler:
   virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
   virtual void OnScrollEvent(ui::ScrollEvent* event) OVERRIDE;
 
   ShowState show_state_;
   PaginationModel* pagination_model_;  // Owned by AppListController.
 
   AppsContainerView* apps_container_view_;  // Owned by the views hierarchy.
+  AppListMainView* app_list_main_view_;  // Owned by the views hierarchy.

[tapted, 2014/03/10 02:41:54]

In keeping with the other GetFooView(..) functions, this could perhaps be (a
member function)

AppListMainView* ContentsView::GetMainView() {
  return static_cast<AppListMainView*>(parent());
}

This would also be a closer match to what's done for the folder view in
apps_grid_view.cc. But I think either is OK (both have merits, so I'll let you
decide).

[calamity, 2014/03/14 07:50:02]

Done.

+  StartPageView* start_page_view_;  // Owned by the views hierarchy.

[tapted, 2014/03/10 02:41:54]

This doesn't seem to be used/initialized - remove?

[calamity, 2014/03/14 07:50:02]

Done.

 
   scoped_ptr<views::ViewModel> view_model_;
   scoped_ptr<views::BoundsAnimator> bounds_animator_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentsView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_CONTENTS_VIEW_H_