Make the fuchsia mojo/public repo the source of truth.

mojo/public/cpp/system/tests/buffer_unittest.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.
-
-// This file tests the C++ wrappers in mojo/public/cpp/system/buffer.h.
-
-#include "mojo/public/cpp/system/buffer.h"
-
-#include "gtest/gtest.h"
-
-namespace mojo {
-namespace {
-
-TEST(BufferTest, BasicSharedBuffer) {
-  // Cursory compilation test of |MakeScopedHandle()| with shared buffer
-  // handles.
-  EXPECT_FALSE(MakeScopedHandle(SharedBufferHandle()).is_valid());
-
-  ScopedSharedBufferHandle shared_buffer;
-  EXPECT_EQ(MOJO_RESULT_OK, CreateSharedBuffer(nullptr, 100u, &shared_buffer));
-  EXPECT_TRUE(shared_buffer.is_valid());
-
-  void* pointer = nullptr;
-  EXPECT_EQ(MOJO_RESULT_OK, MapBuffer(shared_buffer.get(), 0, 100u, &pointer,
-                                      MOJO_MAP_BUFFER_FLAG_NONE));
-  EXPECT_NE(pointer, nullptr);
-
-  // Just try writing to it.
-  *static_cast<char*>(pointer) = 'x';
-
-  shared_buffer.reset();
-
-  // Can still write to it even after the handle is closed.
-  *static_cast<char*>(pointer) = 'y';
-
-  EXPECT_EQ(MOJO_RESULT_OK, UnmapBuffer(pointer));
-}
-
-}  // namespace
-}  // namespace mojo