Fix high-DPI on Windows to make use of DIP scaling in WebKit.

content/browser/renderer_host/render_widget_host_view_guest.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 CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GUEST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GUEST_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 158 matching lines @@
   virtual GdkEventButton* GetLastMouseDown() OVERRIDE;
   virtual gfx::NativeView BuildInputMethodsGtkMenu() OVERRIDE;
   virtual void CreatePluginContainer(gfx::PluginWindowHandle id) OVERRIDE;
   virtual void DestroyPluginContainer(gfx::PluginWindowHandle id) OVERRIDE;
 #endif  // defined(TOOLKIT_GTK)
 
 #if defined(OS_WIN) && !defined(USE_AURA)
   virtual void WillWmDestroy() OVERRIDE;
 #endif  // defined(OS_WIN) && !defined(USE_AURA)
 
-#if defined(OS_POSIX) || defined(USE_AURA)
   virtual void GetScreenInfo(WebKit::WebScreenInfo* results) OVERRIDE;
-#endif  // defined(OS_POSIX) || defined(USE_AURA)
  protected:
   friend class RenderWidgetHostView;
 
  private:
   // The model object.
   RenderWidgetHostImpl* host_;
 
   // Whether or not this widget is hidden.
   bool is_hidden_;
 
   BrowserPluginGuest *guest_;
   gfx::Size size_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewGuest);
 };
 
 }  // namespace content
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GUEST_H_