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

ui/keyboard/scoped_keyboard_disabler.h

Index: ui/keyboard/scoped_keyboard_disabler.h
diff --git a/ui/keyboard/scoped_keyboard_disabler.h b/ui/keyboard/scoped_keyboard_disabler.h
new file mode 100644
index 0000000000000000000000000000000000000000..0a14e87a9e3ef7d873f196560f36bc2ef346e87a
--- /dev/null
+++ b/ui/keyboard/scoped_keyboard_disabler.h
@@ -0,0 +1,30 @@
+// 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_KEYBOARD_SCOPED_KEYBOARD_DISABLER_H_
+#define UI_KEYBOARD_SCOPED_KEYBOARD_DISABLER_H_
+
+#include "base/macros.h"
+#include "ui/keyboard/keyboard_export.h"
+
+namespace keyboard {
+
+// Saves the force disable keyboard state, and restores the state when going out
+// of scope.
+class KEYBOARD_EXPORT ScopedKeyboardDisabler {
+ public:
+  ScopedKeyboardDisabler();
+  ~ScopedKeyboardDisabler();
+
+  void SetForceDisableVirtualKeyboard(bool disable);
+
+ private:
+  const bool force_disable_keyboard_state_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScopedKeyboardDisabler);
+};
+
+}  // namespace keyboard
+
+#endif  // UI_KEYBOARD_SCOPED_KEYBOARD_DISABLER_H_