Remove obsolete scale related APIs for cursor

ui/views/widget/desktop_aura/desktop_native_cursor_manager.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_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_NATIVE_CURSOR_MANAGER_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_NATIVE_CURSOR_MANAGER_H_
 
 #include <set>
 
 #include "base/compiler_specific.h"
@@ skipping 42 matching lines @@
       wm::NativeCursorManagerDelegate* delegate) OVERRIDE;
   virtual void SetCursor(
       gfx::NativeCursor cursor,
       wm::NativeCursorManagerDelegate* delegate) OVERRIDE;
   virtual void SetVisibility(
       bool visible,
       wm::NativeCursorManagerDelegate* delegate) OVERRIDE;
   virtual void SetCursorSet(
       ui::CursorSetType cursor_set,
       wm::NativeCursorManagerDelegate* delegate) OVERRIDE;
-  virtual void SetScale(
-      float scale,
-      wm::NativeCursorManagerDelegate* delegate) OVERRIDE;
   virtual void SetMouseEventsEnabled(
       bool enabled,
       wm::NativeCursorManagerDelegate* delegate) OVERRIDE;
 
   // The set of hosts to notify of changes in cursor state.
   typedef std::set<aura::WindowTreeHost*> Hosts;
   Hosts hosts_;
 
   scoped_ptr<DesktopCursorLoaderUpdater> cursor_loader_updater_;
   scoped_ptr<ui::CursorLoader> cursor_loader_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopNativeCursorManager);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_NATIVE_CURSOR_MANAGER_H_