aura: Remove WindowTreeHost::PostNativeEvent().

ui/aura/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/aura/window_tree_host_win.h"
 
 #include <windows.h>
 
 #include <algorithm>
 
@@ skipping 94 matching lines @@
 }
 
 void WindowTreeHostWin::MoveCursorToNative(const gfx::Point& location) {
   // Deliberately not implemented.
 }
 
 void WindowTreeHostWin::OnCursorVisibilityChangedNative(bool show) {
   NOTIMPLEMENTED();
 }
 
-void WindowTreeHostWin::PostNativeEvent(const base::NativeEvent& native_event) {
-  ::PostMessage(
-      widget_, native_event.message, native_event.wParam, native_event.lParam);
-}
-
 ui::EventProcessor* WindowTreeHostWin::GetEventProcessor() {
   return dispatcher();
 }
 
 void WindowTreeHostWin::OnBoundsChanged(const gfx::Rect& new_bounds) {
   gfx::Rect old_bounds = bounds_;
   bounds_ = new_bounds;
   if (bounds_.origin() != old_bounds.origin())
     OnHostMoved(bounds_.origin());
   if (bounds_.size() != old_bounds.size())
@@ skipping 34 matching lines @@
   widget_ = widget;
   CreateCompositor(widget);
 }
 
 void WindowTreeHostWin::OnActivationChanged(bool active) {
   if (active)
     OnHostActivated();
 }
 
 }  // namespace aura