Remove obsolete scale related APIs for cursor

ui/views/widget/desktop_aura/desktop_native_cursor_manager.cc

 // 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.
 
 #include "ui/views/widget/desktop_aura/desktop_native_cursor_manager.h"
 
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/base/cursor/cursor_loader.h"
 #include "ui/views/widget/desktop_aura/desktop_cursor_loader_updater.h"
@@ skipping 67 matching lines @@
   for (Hosts::const_iterator i = hosts_.begin(); i != hosts_.end(); ++i)
     (*i)->OnCursorVisibilityChanged(visible);
 }
 
 void DesktopNativeCursorManager::SetCursorSet(
     ui::CursorSetType cursor_set,
     wm::NativeCursorManagerDelegate* delegate) {
   NOTIMPLEMENTED();
 }
 
-void DesktopNativeCursorManager::SetScale(
-    float scale,
-    wm::NativeCursorManagerDelegate* delegate) {
-  NOTIMPLEMENTED();
-}
-
 void DesktopNativeCursorManager::SetMouseEventsEnabled(
     bool enabled,
     wm::NativeCursorManagerDelegate* delegate) {
   delegate->CommitMouseEventsEnabled(enabled);
 
   // TODO(erg): In the ash version, we set the last mouse location on Env. I'm
   // not sure this concept makes sense on the desktop.
 
   SetVisibility(delegate->IsCursorVisible(), delegate);
 
   for (Hosts::const_iterator i = hosts_.begin(); i != hosts_.end(); ++i)
     (*i)->dispatcher()->OnMouseEventsEnableStateChanged(enabled);
 }
 
 }  // namespace views