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

ui/events/test/keyboard_layout_mac.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 {
-
-PlatformKeyboardLayout GetPlatformKeyboardLayout(KeyboardLayout layout) {
-  // Right now tests only need US English.  If other layouts need to be
-  // supported in the future this code should be extended.
-  DCHECK_EQ(KEYBOARD_LAYOUT_ENGLISH_US, layout);
-
-  const char kUsInputSourceId[] = "com.apple.keylayout.US";
-
-  base::ScopedCFTypeRef<CFMutableDictionaryRef> input_source_list_filter(
-      CFDictionaryCreateMutable(kCFAllocatorDefault, 1,
-                                &kCFTypeDictionaryKeyCallBacks,
-                                &kCFTypeDictionaryValueCallBacks));
-  base::ScopedCFTypeRef<CFStringRef> input_source_id_ref(
-      CFStringCreateWithCString(kCFAllocatorDefault, kUsInputSourceId,
-                                kCFStringEncodingUTF8));
-  CFDictionaryAddValue(input_source_list_filter, kTISPropertyInputSourceID,
-                       input_source_id_ref);
-  base::ScopedCFTypeRef<CFArrayRef> input_source_list(
-      TISCreateInputSourceList(input_source_list_filter, true));
-  if (CFArrayGetCount(input_source_list) != 1)
-    return PlatformKeyboardLayout();
-
-  return PlatformKeyboardLayout(
-      (TISInputSourceRef)CFArrayGetValueAtIndex(input_source_list, 0));
-}
-
-PlatformKeyboardLayout ScopedKeyboardLayout::GetActiveLayout() {
-  return PlatformKeyboardLayout(TISCopyCurrentKeyboardInputSource());
-}
-
-void ScopedKeyboardLayout::ActivateLayout(PlatformKeyboardLayout layout) {
-  DCHECK(layout);
-  OSStatus result = TISSelectInputSource(layout);
-  DCHECK_EQ(noErr, result);
-}
-
-}  // namespace ui