cros: Allow pin keyboard to keep focus without popping up the pin keyboard.

ui/keyboard/scoped_keyboard_disabler.cc

Index: ui/keyboard/scoped_keyboard_disabler.cc
diff --git a/ui/keyboard/scoped_keyboard_disabler.cc b/ui/keyboard/scoped_keyboard_disabler.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8e9c813079fcfab157c3527322cd9f5bd83babc4
--- /dev/null
+++ b/ui/keyboard/scoped_keyboard_disabler.cc
@@ -0,0 +1,24 @@
+// 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.
+
+#include "ui/keyboard/scoped_keyboard_disabler.h"
+
+#include "ui/keyboard/keyboard_util.h"
+
+namespace keyboard {
+
+ScopedKeyboardDisabler::ScopedKeyboardDisabler()
+  : force_disable_keyboard_state_(
+      ::keyboard::GetForceDisableVirtualKeyboard())
+  {}
+
+ScopedKeyboardDisabler::~ScopedKeyboardDisabler() {
+  ::keyboard::SetForceDisableVirtualKeyboard(force_disable_keyboard_state_);
+}
+
+void ScopedKeyboardDisabler::SetForceDisableVirtualKeyboard(bool disable) {
+  ::keyboard::SetForceDisableVirtualKeyboard(disable);
+}
+
+}  // namespace keyboard