Move shelf item tooltip flag from delegate to item.

ash/common/wm_window.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_COMMON_WM_WINDOW_H_
 #define ASH_COMMON_WM_WINDOW_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 116 matching lines @@
   virtual float GetTargetOpacity() const = 0;
 
   virtual gfx::Rect GetMinimizeAnimationTargetBoundsInScreen() const = 0;
 
   virtual void SetTransform(const gfx::Transform& transform) = 0;
   virtual gfx::Transform GetTargetTransform() const = 0;
 
   virtual bool IsSystemModal() const = 0;
 
   virtual bool GetBoolProperty(WmWindowProperty key) = 0;
+  virtual void SetBoolProperty(WmWindowProperty key, bool value) = 0;
   virtual SkColor GetColorProperty(WmWindowProperty key) = 0;
   virtual void SetColorProperty(WmWindowProperty key, SkColor value) = 0;
   virtual int GetIntProperty(WmWindowProperty key) = 0;
   virtual void SetIntProperty(WmWindowProperty key, int value) = 0;
   virtual std::string GetStringProperty(WmWindowProperty key) = 0;
   virtual void SetStringProperty(WmWindowProperty key,
                                  const std::string& value) = 0;
 
   virtual gfx::ImageSkia GetWindowIcon() = 0;
   virtual gfx::ImageSkia GetAppIcon() = 0;
@@ skipping 193 matching lines @@
   virtual void AddLimitedPreTargetHandler(ui::EventHandler* handler) = 0;
   virtual void RemoveLimitedPreTargetHandler(ui::EventHandler* handler) = 0;
 
  protected:
   virtual ~WmWindow() {}
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_WM_WINDOW_H_