Add DeviceDisplayInfo getter in WindowAndroid.

ui/android/screen_android.h

Index: ui/android/screen_android.h
diff --git a/ui/android/screen_android.h b/ui/android/screen_android.h
new file mode 100644
index 0000000000000000000000000000000000000000..50c4dc7cc9b4fb830a36072e269240f72fd5249b
--- /dev/null
+++ b/ui/android/screen_android.h
@@ -0,0 +1,15 @@
+// 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 SCREEN_ANDROID_H
+#define SCREEN_ANDROID_H
+
+#include "ui/android/ui_android_export.h"
+#include "ui/gfx/screen.h"
+
+namespace ui {
+UI_ANDROID_EXPORT gfx::Screen* CreateScreenAndroid();
+}
+
+#endif  // SCREEN_ANDROID_H