Move shelf item tooltip flag from delegate to item.

ash/mus/bridge/wm_window_mus.h

 // Copyright 2016 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 ASH_MUS_BRIDGE_WM_WINDOW_MUS_H_
 #define ASH_MUS_BRIDGE_WM_WINDOW_MUS_H_
 
 #include <memory>
 
 #include "ash/aura/wm_window_aura.h"
@@ skipping 80 matching lines @@
   WmRootWindowController* GetRootWindowController() override;
   WmShell* GetShell() const override;
   bool IsBubble() override;
   bool HasNonClientArea() override;
   int GetNonClientComponent(const gfx::Point& location) override;
   gfx::Size GetMinimumSize() const override;
   gfx::Size GetMaximumSize() const override;
   gfx::Rect GetMinimizeAnimationTargetBoundsInScreen() const override;
   bool IsSystemModal() const override;
   bool GetBoolProperty(WmWindowProperty key) override;
+  void SetBoolProperty(WmWindowProperty key, bool value) override;
   int GetIntProperty(WmWindowProperty key) override;
   WmWindow* GetToplevelWindow() override;
   WmWindow* GetToplevelWindowForFocus() override;
   bool MoveToEventRoot(const ui::Event& event) override;
   void SetBoundsInScreen(const gfx::Rect& bounds_in_screen,
                          const display::Display& dst_display) override;
   void SetPinned(bool trusted) override;
   views::Widget* GetInternalWidget() override;
   void CloseWidget() override;
   bool CanActivate() const override;
@@ skipping 30 matching lines @@
   BoundsInScreenBehavior child_bounds_in_screen_behavior_ =
       BoundsInScreenBehavior::USE_LOCAL_COORDINATES;
 
   DISALLOW_COPY_AND_ASSIGN(WmWindowMus);
 };
 
 }  // namespace mus
 }  // namespace ash
 
 #endif  // ASH_MUS_BRIDGE_WM_WINDOW_MUS_H_