Remove unnecessary uses of aura::Env::GetDispatcher

ui/gfx/font_smoothing_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/gfx/font_smoothing_win.h"
 
 #include "base/memory/singleton.h"
 #include "ui/gfx/win/singleton_hwnd.h"
 
 namespace {
@@ skipping 18 matching lines @@
 
   // Listener for WM_SETTINGCHANGE notifications.
   virtual void OnWndProc(HWND hwnd,
                          UINT message,
                          WPARAM wparam,
                          LPARAM lparam) OVERRIDE;
 
   // Queries the font settings from the system.
   void QueryFontSettings();
 
-  // Indicates whether the MessagePumpObserver has been registered.
+  // Indicates whether the SingletonHwnd::Observer has been registered.
   bool observer_added_;
 
   // Indicates whether |smoothing_enabled_| and |cleartype_enabled_| are valid
   // or need to be re-queried from the system.
   bool need_to_query_settings_;
 
   // Indicates that font smoothing is enabled.
   bool smoothing_enabled_;
 
   // Indicates that the ClearType font smoothing is enabled.
@@ skipping 62 matching lines @@
 namespace gfx {
 
 void GetCachedFontSmoothingSettings(bool* smoothing_enabled,
                                     bool* cleartype_enabled) {
   CachedFontSmoothingSettings::GetInstance()->GetFontSmoothingSettings(
       smoothing_enabled,
       cleartype_enabled);
 }
 
 }  // namespace gfx