Add device policy: Kiosk Virtual Keyboard Layout.

ui/keyboard/keyboard_util.h

Index: ui/keyboard/keyboard_util.h
diff --git a/ui/keyboard/keyboard_util.h b/ui/keyboard/keyboard_util.h
index d553c1b4f7272bf6c27499f252921e6666d8a38f..c2b31b8819d601d163143cdd4144ead989e73619 100644
--- a/ui/keyboard/keyboard_util.h
+++ b/ui/keyboard/keyboard_util.h
@@ -45,6 +45,13 @@ enum KeyboardOverscrolOverride {
   KEYBOARD_OVERSCROLL_OVERRIDE_NONE,
 };
 
+// An enumeration of keyboard policy settings.
+enum KeyboardShowOverride {
+  KEYBOARD_SHOW_OVERRIDE_DISABLED = 0,
+  KEYBOARD_SHOW_OVERRIDE_ENABLED,
+  KEYBOARD_SHOW_OVERRIDE_NONE,
+};
+
 // Gets the default keyboard bounds from |window_bounds|.
 KEYBOARD_EXPORT gfx::Rect DefaultKeyboardBoundsFromWindowBounds(
     const gfx::Rect& window_bounds);
@@ -82,6 +89,9 @@ KEYBOARD_EXPORT bool IsKeyboardOverscrollEnabled();
 KEYBOARD_EXPORT void SetKeyboardOverscrollOverride(
     KeyboardOverscrolOverride override);
 
+// Sets policy override on whether to show the keyboard.
+KEYBOARD_EXPORT void SetKeyboardShowOverride(KeyboardShowOverride override);
+
 // Returns true if an IME extension can specify a custom input view for the
 // virtual keyboard window.
 KEYBOARD_EXPORT bool IsInputViewEnabled();