Remove useless DesktopWindowTreeHostWin::HandleTooltipMouseMove()

ui/views/win/hwnd_message_handler_delegate.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_WIN_HWND_MESSAGE_HANDLER_DELEGATE_H_
 #define UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_DELEGATE_H_
 
 #include "ui/views/views_export.h"
 
 namespace gfx {
@@ skipping 186 matching lines @@
   virtual bool HandlePaintAccelerated(const gfx::Rect& invalid_rect) = 0;
 
   // Called to compel the delegate to paint using the software path.
   virtual void HandlePaint(gfx::Canvas* canvas) = 0;
 
   // Called to forward a WM_NOTIFY message to the tooltip manager.
   virtual bool HandleTooltipNotify(int w_param,
                                    NMHDR* l_param,
                                    LRESULT* l_result) = 0;
 
-  // Called to forward mouse events to the tooltip manager.
-  virtual void HandleTooltipMouseMove(UINT message,
-                                      WPARAM w_param,
-                                      LPARAM l_param) = 0;
-
   // Invoked on entering/exiting a menu loop.
   virtual void HandleMenuLoop(bool in_menu_loop) = 0;
 
   // Catch-all message handling and filtering. Called before
   // HWNDMessageHandler's built-in handling, which may pre-empt some
   // expectations in Views/Aura if messages are consumed. Returns true if the
   // message was consumed by the delegate and should not be processed further
   // by the HWNDMessageHandler. In this case, |result| is returned. |result| is
   // not modified otherwise.
   virtual bool PreHandleMSG(UINT message,
@@ skipping 14 matching lines @@
   // Called when the window size is about to change.
   virtual void HandleWindowSizeChanging() = 0;
 
  protected:
   virtual ~HWNDMessageHandlerDelegate() {}
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_DELEGATE_H_