1 files changed, 36 insertions, 0 deletions
diff --git a/chromium/ash/high_contrast/high_contrast_controller.cc b/chromium/ash/high_contrast/high_contrast_controller.cc
new file mode 100644
index 00000000000..487c41bf47c
--- /dev/null
+++ b/chromium/ash/high_contrast/high_contrast_controller.cc
@@ -0,0 +1,36 @@
+// Copyright (c) 2012 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 "ash/high_contrast/high_contrast_controller.h"
+
+#include "ash/shell.h"
+#include "ui/aura/root_window.h"
+#include "ui/compositor/layer.h"
+
+namespace ash {
+
+HighContrastController::HighContrastController()
+    : enabled_(false) {
+}
+
+void HighContrastController::SetEnabled(bool enabled) {
+  enabled_ = enabled;
+
+  // Update all active displays.
+  aura::Window::Windows root_window_list = Shell::GetAllRootWindows();
+  for (aura::Window::Windows::iterator it = root_window_list.begin();
+      it != root_window_list.end(); it++) {
+    UpdateDisplay(*it);
+  }
+}
+
+void HighContrastController::OnRootWindowAdded(aura::Window* root_window) {
+  UpdateDisplay(root_window);
+}
+
+void HighContrastController::UpdateDisplay(aura::Window* root_window) {
+  root_window->layer()->SetLayerInverted(enabled_);
+}
+
+}  // namespace ash