Reland "Add a full screen virtual keyboard to virtual keyboard root window"

ui/keyboard/keyboard_util.h

 // Copyright (c) 2013 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_KEYBOARD_KEYBOARD_UTIL_H_
 #define UI_KEYBOARD_KEYBOARD_UTIL_H_
 
 #include <string>
 
 #include "base/strings/string16.h"
@@ skipping 17 matching lines @@
 enum KeyboardControlEvent {
   KEYBOARD_CONTROL_SHOW = 0,
   KEYBOARD_CONTROL_HIDE_AUTO,
   KEYBOARD_CONTROL_HIDE_USER,
   KEYBOARD_CONTROL_MAX,
 };
 
 // Returns true if the virtual keyboard is enabled.
 KEYBOARD_EXPORT bool IsKeyboardEnabled();
 
+// Returns true if the keyboard usability test is enabled.
+KEYBOARD_EXPORT bool IsKeyboardUsabilityExperimentEnabled();
+
 // Insert |text| into the active TextInputClient associated with |root_window|,
 // if there is one. Returns true if |text| was successfully inserted. Note
 // that this may convert |text| into ui::KeyEvents for injection in some
 // special circumstances (i.e. VKEY_RETURN, VKEY_BACK).
 KEYBOARD_EXPORT bool InsertText(const base::string16& text,
                                 aura::Window* root_window);
 
 // Move cursor when swipe on the virtualkeyboard. Returns true if cursor was
 // successfully moved according to |swipe_direction|.
 KEYBOARD_EXPORT bool MoveCursor(int swipe_direction,
@@ skipping 24 matching lines @@
 // resources in the returned array.
 KEYBOARD_EXPORT const GritResourceMap* GetKeyboardExtensionResources(
     size_t* size);
 
 // Logs the keyboard control event as a UMA stat.
 void LogKeyboardControlEvent(KeyboardControlEvent event);
 
 }  // namespace keyboard
 
 #endif  // UI_KEYBOARD_KEYBOARD_UTIL_H_