gpu: Move native memory buffer configuration into //gpu

gpu/ipc/common/gpu_switches.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 "gpu/ipc/common/gpu_switches.h"
+
+namespace switches {
+
+// Enable native GPU memory buffer support when available.
+const char kEnableNativeGpuMemoryBuffers[] = "enable-native-gpu-memory-buffers";
+
+// Disables native GPU memory buffer support.
+const char kDisableNativeGpuMemoryBuffers[] =
+    "disable-native-gpu-memory-buffers";
+
+}  // namespace switches