mash: Create and show a shelf in mash.

ash/aura/wm_shelf_aura.h

Index: ash/aura/wm_shelf_aura.h
diff --git a/ash/aura/wm_shelf_aura.h b/ash/aura/wm_shelf_aura.h
index 28a6cf1f054cd9ab8220d06373f1a2d9cacfa80c..fdb6ee9aca63a795c9dbcabaf5ee05b3bc825671 100644
--- a/ash/aura/wm_shelf_aura.h
+++ b/ash/aura/wm_shelf_aura.h
@@ -6,83 +6,26 @@
 #define ASH_AURA_WM_SHELF_AURA_H_
 
 #include "ash/ash_export.h"
-#include "ash/common/shelf/shelf_icon_observer.h"
 #include "ash/common/shelf/wm_shelf.h"
-#include "ash/shelf/shelf_layout_manager_observer.h"
 #include "base/macros.h"
-#include "base/observer_list.h"
 
 namespace ash {
 
-class Shelf;
 class ShelfBezelEventHandler;
-class ShelfLayoutManager;
 
 // Aura implementation of WmShelf.
-class ASH_EXPORT WmShelfAura : public WmShelf,
-                               public ShelfLayoutManagerObserver,
-                               public ShelfIconObserver {
+class ASH_EXPORT WmShelfAura : public WmShelf {
  public:
   WmShelfAura();
   ~WmShelfAura() override;
 
-  // This object is initialized in multiple steps as the RootWindowController
-  // constructs the components of the shelf.
-  void SetShelfLayoutManager(ShelfLayoutManager* shelf_layout_manager);
-  void SetShelf(Shelf* shelf);
-
-  void Shutdown();
-
-  static Shelf* GetShelf(WmShelf* shelf);
-
- private:
-  class AutoHideEventHandler;
-
-  void ResetShelfLayoutManager();
-
   // WmShelf:
-  WmWindow* GetWindow() override;
-  ShelfAlignment GetAlignment() const override;
-  void SetAlignment(ShelfAlignment alignment) override;
-  ShelfAutoHideBehavior GetAutoHideBehavior() const override;
-  void SetAutoHideBehavior(ShelfAutoHideBehavior behavior) override;
-  ShelfAutoHideState GetAutoHideState() const override;
-  void UpdateAutoHideState() override;
-  ShelfBackgroundType GetBackgroundType() const override;
   WmDimmerView* CreateDimmerView(bool disable_animations_for_test) override;
-  bool IsDimmed() const override;
-  void SchedulePaint() override;
-  bool IsVisible() const override;
-  void UpdateVisibilityState() override;
-  ShelfVisibilityState GetVisibilityState() const override;
-  gfx::Rect GetIdealBounds() override;
-  gfx::Rect GetUserWorkAreaBounds() const override;
-  void UpdateIconPositionForWindow(WmWindow* window) override;
-  gfx::Rect GetScreenBoundsOfItemIconForWindow(WmWindow* window) override;
-  bool ProcessGestureEvent(const ui::GestureEvent& event) override;
-  void AddObserver(WmShelfObserver* observer) override;
-  void RemoveObserver(WmShelfObserver* observer) override;
-  void SetKeyboardBoundsForTesting(const gfx::Rect& bounds) override;
-  ShelfLockingManager* GetShelfLockingManagerForTesting() override;
-  ShelfView* GetShelfViewForTesting() override;
-
-  // ShelfLayoutManagerObserver:
-  void WillDeleteShelfLayoutManager() override;
-  void OnAutoHideStateChanged(ShelfAutoHideState new_state) override;
-  void OnBackgroundUpdated(ShelfBackgroundType background_type,
-                           BackgroundAnimatorChangeType change_type) override;
+  void SetShelfLayoutManager(ShelfLayoutManager* shelf_layout_manager) override;
   void WillChangeVisibilityState(ShelfVisibilityState new_state) override;
 
-  // ShelfIconObserver:
-  void OnShelfIconPositionsChanged() override;
-
-  // May be null during login and during initialization of a secondary display.
-  Shelf* shelf_ = nullptr;
-
-  // Cached separately because it may be destroyed before |shelf_|.
-  ShelfLayoutManager* shelf_layout_manager_ = nullptr;
-
-  base::ObserverList<WmShelfObserver> observers_;
+ private:
+  class AutoHideEventHandler;
 
   // Forwards mouse and gesture events to ShelfLayoutManager for auto-hide.
   // TODO(mash): Facilitate simliar functionality in mash: crbug.com/631216