The on screen keyboard on Windows 8+ should not obscure the input field.

content/browser/renderer_host/render_view_host_impl.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_VIEW_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 375 matching lines @@
   // TODO(creis): Move to RenderFrameHost and RenderWidgetHost.
   // See http://crbug.com/418265.
   bool is_waiting_for_close_ack_;
 
   // True if the render view can be shut down suddenly.
   bool sudden_termination_allowed_;
 
   // The termination status of the last render view that terminated.
   base::TerminationStatus render_view_termination_status_;
 
-  // Set to true if we requested the on screen keyboard to be displayed.
-  bool virtual_keyboard_requested_;
-
   // True if the current focused element is editable.
   bool is_focused_element_editable_;
 
   // This is updated every time UpdateWebkitPreferences is called. That method
   // is in turn called when any of the settings change that the WebPreferences
   // values depend on.
   std::unique_ptr<WebPreferences> web_preferences_;
 
   bool updating_web_preferences_;
 
   bool render_view_ready_on_process_launch_;
 
   base::WeakPtrFactory<RenderViewHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_