mash: Support ShelfWindowWatcher via ShelfItem properties.

ash/common/wm_window.h

Index: ash/common/wm_window.h
diff --git a/ash/common/wm_window.h b/ash/common/wm_window.h
index 30a0a3cf50dffae35d81d1c775bfa2221ab4a146..7f4964141d7ea9157b2433726e65bb19d91bf4a2 100644
--- a/ash/common/wm_window.h
+++ b/ash/common/wm_window.h
@@ -41,7 +41,6 @@ class Widget;
 namespace ash {
 
 class ImmersiveFullscreenController;
-struct ShelfItemDetails;
 class WmLayoutManager;
 class WmRootWindowController;
 class WmShell;
@@ -81,6 +80,7 @@ class ASH_EXPORT WmWindow {
   virtual void SetName(const char* name) = 0;
   virtual std::string GetName() const = 0;
 
+  virtual void SetTitle(const base::string16& title) = 0;
   virtual base::string16 GetTitle() const = 0;
 
   // See shell_window_ids.h for list of known ids.
@@ -133,11 +133,6 @@ class ASH_EXPORT WmWindow {
   virtual int GetIntProperty(WmWindowProperty key) = 0;
   virtual void SetIntProperty(WmWindowProperty key, int value) = 0;
 
-  // Returns null if there are no details.
-  virtual ShelfItemDetails* GetShelfItemDetails() = 0;
-  virtual void SetShelfItemDetails(const ShelfItemDetails& details) = 0;
-  virtual void ClearShelfItemDetails() = 0;
-
   wm::WindowState* GetWindowState() {
     return const_cast<wm::WindowState*>(
         const_cast<const WmWindow*>(this)->GetWindowState());