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/singleton.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 |observer| parameters allow the caller to optionally set up
+  // notification observers for detecting when the keyboard is displayed
+  // hidden etc.

[grt (UTC plus 2), 2016/05/20 14:56:35]

it looks like the observer is automagically removed once the keyboard is
dismissed. please document this.

[ananta, 2016/05/20 19:32:55]

Done.

+  bool DisplayVirtualKeyboard(OnScreenKeyboardObserver* observer);
+  bool DismissVirtualKeyboard();
+
+ private:
+  OnScreenKeyboardDisplayManager();
+
+  friend struct base::DefaultSingletonTraits<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_