Reland of Force U.S. English keyboard layout for TextfieldTest.KeysWithModifiersTest

ui/events/test/keyboard_layout.cc

+// 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/events/test/keyboard_layout.h"
+
+#include "base/logging.h"
+
+namespace ui {
+
+ScopedKeyboardLayout::ScopedKeyboardLayout(KeyboardLayout layout) {
+  original_layout_ = GetActiveLayout();
+  ActivateLayout(GetPlatformKeyboardLayout(layout));
+}
+
+ScopedKeyboardLayout::~ScopedKeyboardLayout() {
+  ActivateLayout(original_layout_);
+}
+
+#if !defined(OS_WIN) && !(defined(OS_MACOSX) && !defined(OS_IOS))
+PlatformKeyboardLayout ScopedKeyboardLayout::GetActiveLayout() {
+  NOTIMPLEMENTED();
+  return nullptr;
+}
+
+void ScopedKeyboardLayout::ActivateLayout(PlatformKeyboardLayout layout) {
+  NOTIMPLEMENTED();
+}
+
+PlatformKeyboardLayout GetPlatformKeyboardLayout(KeyboardLayout layout) {
+  NOTIMPLEMENTED();
+  return nullptr;
+}
+#endif
+
+}  // namespace ui