Refactor app list so AppsGridView owns the PaginationModel.

ui/app_list/views/app_list_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_APP_LIST_VIEW_H_
 #define UI_APP_LIST_VIEWS_APP_LIST_VIEW_H_
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
@@ skipping 29 matching lines @@
                                     public AppListViewDelegateObserver,
                                     public SpeechUIModelObserver {
  public:
   // Takes ownership of |delegate|.
   explicit AppListView(AppListViewDelegate* delegate);
   virtual ~AppListView();
 
   // Initializes the widget and use a given |anchor| plus an |anchor_offset| for
   // positioning.
   void InitAsBubbleAttachedToAnchor(gfx::NativeView parent,
-                                    PaginationModel* pagination_model,
                                     views::View* anchor,
                                     const gfx::Vector2d& anchor_offset,
                                     views::BubbleBorder::Arrow arrow,
                                     bool border_accepts_events);
 
   // Initializes the widget and use a fixed |anchor_point_in_screen| for
   // positioning.
   void InitAsBubbleAtFixedLocation(gfx::NativeView parent,
-                                   PaginationModel* pagination_model,
                                    const gfx::Point& anchor_point_in_screen,
                                    views::BubbleBorder::Arrow arrow,
                                    bool border_accepts_events);
 
   void SetBubbleArrow(views::BubbleBorder::Arrow arrow);
 
   void SetAnchorPoint(const gfx::Point& anchor_point);
 
   // If |drag_and_drop_host| is not NULL it will be called upon drag and drop
   // operations outside the application list. This has to be called after
@@ skipping 38 matching lines @@
 
   // Set a callback to be called the next time any app list paints.
   void SetNextPaintCallback(const base::Closure& callback);
 
 #if defined(OS_WIN)
   HWND GetHWND() const;
 #endif
 
   AppListMainView* app_list_main_view() { return app_list_main_view_; }
 
+  // Gets the PaginationModel owned by this view's apps grid.
+  PaginationModel* GetAppsPaginationModel();
+
  private:
   friend class ::test::AppListViewTestApi;
 
   void InitAsBubbleInternal(gfx::NativeView parent,
-                            PaginationModel* pagination_model,
                             views::BubbleBorder::Arrow arrow,
                             bool border_accepts_events,
                             const gfx::Vector2d& anchor_offset);
 
   // Overridden from views::BubbleDelegateView:
   virtual void OnBeforeBubbleWidgetInit(
       views::Widget::InitParams* params,
       views::Widget* widget) const OVERRIDE;
 
   // Overridden from views::WidgetDelegateView:
@@ skipping 35 matching lines @@
 
   // For UMA and testing. If non-null, triggered when the app list is painted.
   base::Closure next_paint_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_APP_LIST_VIEW_H_