mus: Introduce high-contrast mode in mus.

services/ui/ws/accessibility_manager.cc

Index: services/ui/ws/accessibility_manager.cc
diff --git a/services/ui/ws/accessibility_manager.cc b/services/ui/ws/accessibility_manager.cc
new file mode 100644
index 0000000000000000000000000000000000000000..3b934bb4a89e0c53031230f2d8ebc929c1c335fc
--- /dev/null
+++ b/services/ui/ws/accessibility_manager.cc
@@ -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.
+
+#include "services/ui/ws/accessibility_manager.h"
+
+#include "services/ui/ws/window_server.h"
+
+namespace ui {
+namespace ws {
+
+AccessibilityManager::AccessibilityManager(WindowServer* window_server,
+                                           const UserId& user)
+    : window_server_(window_server), user_(user), binding_(this) {
+  DCHECK(window_server_);
+}
+
+AccessibilityManager::~AccessibilityManager() {}
+
+void AccessibilityManager::Bind(mojom::AccessibilityManagerRequest request) {
+  binding_.Close();
+  binding_.Bind(std::move(request));
+}
+
+void AccessibilityManager::SetHighContrastMode(bool enabled) {
+  window_server_->SetHighContrastMode(user_, enabled);
+}
+
+}  // namespace ws
+}  // namespace ui