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

ui/base/win/osk_display_manager.h

+// Copyright 2016 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 UI_BASE_WIN_OSK_DISPLAY_MANAGER_H_
+#define UI_BASE_WIN_OSK_DISPLAY_MANAGER_H_
+
+#include "base/memory/weak_ptr.h"
+#include "base/observer_list.h"
+#include "base/strings/string16.h"
+#include "ui/base/ui_base_export.h"
+#include "ui/gfx/geometry/rect.h"
+
+namespace ui {
+
+class OnScreenKeyboardDetector;
+class OnScreenKeyboardObserver;
+
+// This class provides functionality to display the on screen keyboard on
+// Windows 8+. It optionally notifies observers that the OSK is displayed,
+// hidden, etc.
+class UI_BASE_EXPORT OnScreenKeyboardDisplayManager {
+ public:
+  static OnScreenKeyboardDisplayManager* GetInstance();
+
+  ~OnScreenKeyboardDisplayManager();
+
+  // Functions to display and dismiss the keyboard.
+  // The optional |observer| parameter allows callers to be notified when the
+  // keyboard is displayed, dismissed, etc.
+  bool DisplayVirtualKeyboard(OnScreenKeyboardObserver* observer);
+  // When the keyboard is dismissed, the registered observer if any is removed
+  // after notifying it.
+  bool DismissVirtualKeyboard();
+
+  // Removes a registered observer.
+  void RemoveObserver(OnScreenKeyboardObserver* observer);
+
+  // Returns the path of the on screen keyboard exe (TabTip.exe) in the
+  // |osk_path| parameter.
+  // Returns true on success.
+  bool GetOSKPath(base::string16* osk_path);
+
+ private:
+  OnScreenKeyboardDisplayManager();
+
+  std::unique_ptr<OnScreenKeyboardDetector> keyboard_detector_;
+
+  // The location of TabTip.exe.
+  base::string16 osk_path_;
+
+  DISALLOW_COPY_AND_ASSIGN(OnScreenKeyboardDisplayManager);
+};
+
+}  // namespace ui
+
+#endif  // UI_BASE_WIN_OSK_DISPLAY_MANAGER_H_