Chromium plumbing for Device Orientation.

chrome/browser/device_orientation/provider.cc

+// Copyright (c) 2010 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 "chrome/browser/device_orientation/provider.h"
+
+namespace device_orientation {
+
+Provider* Provider::GetInstance() {
+  if (!instance_)
+    // TODO(hans) This is not finished. We will create an instance of the real
+    // Provider implementation once it is implemented.
+    instance_ = new Provider();
+  return instance_;
+}
+
+void Provider::SetInstanceForTests(Provider* provider) {
+  DCHECK(!instance_);
+  instance_ = provider;
+}
+
+Provider* Provider::instance_ = NULL;
+
+} //  namespace device_orientation