Remove useless DesktopWindowTreeHostWin::HandleTooltipMouseMove()

ui/views/widget/desktop_aura/desktop_window_tree_host_win.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_window_tree_host_win.h"
 
 #include "base/win/metro.h"
 #include "third_party/skia/include/core/SkPath.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "ui/aura/client/aura_constants.h"
@@ skipping 845 matching lines @@
   if (compositor())
     compositor()->ScheduleRedrawRect(gfx::Rect());
 }
 
 bool DesktopWindowTreeHostWin::HandleTooltipNotify(int w_param,
                                                    NMHDR* l_param,
                                                    LRESULT* l_result) {
   return tooltip_ && tooltip_->HandleNotify(w_param, l_param, l_result);
 }
 
-void DesktopWindowTreeHostWin::HandleTooltipMouseMove(UINT message,
-                                                      WPARAM w_param,
-                                                      LPARAM l_param) {
-  // TooltipWin implementation doesn't need this.
-  // TODO(sky): remove from HWNDMessageHandler once non-aura path nuked.
-}
-
 void DesktopWindowTreeHostWin::HandleMenuLoop(bool in_menu_loop) {
   if (in_menu_loop) {
     tooltip_disabler_.reset(
         new aura::client::ScopedTooltipDisabler(window()));
   } else {
     tooltip_disabler_.reset();
   }
 }
 
 bool DesktopWindowTreeHostWin::PreHandleMSG(UINT message,
@@ skipping 63 matching lines @@
 
 // static
 DesktopWindowTreeHost* DesktopWindowTreeHost::Create(
     internal::NativeWidgetDelegate* native_widget_delegate,
     DesktopNativeWidgetAura* desktop_native_widget_aura) {
   return new DesktopWindowTreeHostWin(native_widget_delegate,
                                       desktop_native_widget_aura);
 }
 
 }  // namespace views