[Cleanup] Remove mac code from aura/ash/views

ui/aura/root_window.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/root_window.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 408 matching lines @@
 
 void RootWindow::AddRootWindowObserver(RootWindowObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void RootWindow::RemoveRootWindowObserver(RootWindowObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 void RootWindow::PostNativeEvent(const base::NativeEvent& native_event) {
-#if !defined(OS_MACOSX)
   host_->PostNativeEvent(native_event);
-#endif
 }
 
 void RootWindow::ConvertPointToNativeScreen(gfx::Point* point) const {
   ConvertPointToHost(point);
   gfx::Point location = host_->GetLocationOnNativeScreen();
   point->Offset(location.x(), location.y());
 }
 
 void RootWindow::ConvertPointFromNativeScreen(gfx::Point* point) const {
   gfx::Point location = host_->GetLocationOnNativeScreen();
@@ skipping 799 matching lines @@
 }
 
 gfx::Transform RootWindow::GetInverseRootTransform() const {
   float scale = ui::GetDeviceScaleFactor(layer());
   gfx::Transform transform;
   transform.Scale(1.0f / scale, 1.0f / scale);
   return transformer_->GetInverseTransform() * transform;
 }
 
 }  // namespace aura