Make Mac swap code like other platforms

content/common/accelerated_surface_buffers_swapped_params_mac.cc

Index: content/common/accelerated_surface_buffers_swapped_params_mac.cc
diff --git a/content/common/accelerated_surface_buffers_swapped_params_mac.cc b/content/common/accelerated_surface_buffers_swapped_params_mac.cc
deleted file mode 100644
index e70b4f617beb94a792eac830ff98adb6e9251dc6..0000000000000000000000000000000000000000
--- a/content/common/accelerated_surface_buffers_swapped_params_mac.cc
+++ /dev/null
@@ -1,16 +0,0 @@
-// 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 "content/common/accelerated_surface_buffers_swapped_params_mac.h"
-
-namespace content {
-AcceleratedSurfaceBuffersSwappedParams::AcceleratedSurfaceBuffersSwappedParams()
-    : surface_handle(gpu::kNullSurfaceHandle),
-      ca_context_id(0),
-      scale_factor(1.f) {}
-
-AcceleratedSurfaceBuffersSwappedParams::
-    ~AcceleratedSurfaceBuffersSwappedParams() {}
-
-}  // namespace content