Remove obsolete scale related APIs for cursor

ui/wm/core/native_cursor_manager.h

 // Copyright (c) 2013 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_WM_CORE_NATIVE_CURSOR_MANAGER_H_
 #define UI_WM_CORE_NATIVE_CURSOR_MANAGER_H_
 
 #include "base/strings/string16.h"
 #include "ui/wm/core/native_cursor_manager_delegate.h"
 #include "ui/wm/core/wm_core_export.h"
@@ skipping 24 matching lines @@
       gfx::NativeCursor cursor,
       wm::NativeCursorManagerDelegate* delegate) = 0;
 
   // A request to set the visibility of the cursor. At minimum, implementer
   // should call NativeCursorManagerDelegate::CommitVisibility() with whatever
   // the visibility is.
   virtual void SetVisibility(
     bool visible,
     wm::NativeCursorManagerDelegate* delegate) = 0;
 
-  // A request to set the scale of the cursor icon.
-  virtual void SetScale(
-      float scale,
-      wm::NativeCursorManagerDelegate* delegate) = 0;
-
-  // A request to set the scale of the cursor icon.
+  // A request to set the cursor set.
   virtual void SetCursorSet(
       ui::CursorSetType cursor_set,
       wm::NativeCursorManagerDelegate* delegate) = 0;
 
   // A request to set whether mouse events are disabled. At minimum,
   // implementer should call NativeCursorManagerDelegate::
   // CommitMouseEventsEnabled() with whether mouse events are actually enabled.
   virtual void SetMouseEventsEnabled(
       bool enabled,
       wm::NativeCursorManagerDelegate* delegate) = 0;
 };
 
 }  // namespace wm
 
 #endif  // UI_WM_CORE_NATIVE_CURSOR_MANAGER_H_