Use mus::MojoGpuMemoryBufferManager in mus::GpuService.

components/mus/gles2/mojo_gpu_memory_buffer.cc

-// Copyright 2015 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 "components/mus/gles2/mojo_gpu_memory_buffer.h"
-
-#include <stdint.h>
-
-#include "base/logging.h"
-#include "base/memory/ptr_util.h"
-#include "base/memory/shared_memory.h"
-#include "base/numerics/safe_conversions.h"
-#include "build/build_config.h"
-#include "ui/gfx/buffer_format_util.h"
-
-namespace mus {
-
-MojoGpuMemoryBufferImpl::MojoGpuMemoryBufferImpl(
-    const gfx::Size& size,
-    gfx::BufferFormat format,
-    std::unique_ptr<base::SharedMemory> shared_memory)
-    : GpuMemoryBufferImpl(gfx::GenericSharedMemoryId(0), size, format),
-      shared_memory_(std::move(shared_memory)) {}
-
-// TODO(rjkroege): Support running a destructor callback as necessary.
-MojoGpuMemoryBufferImpl::~MojoGpuMemoryBufferImpl() {}
-
-std::unique_ptr<gfx::GpuMemoryBuffer> MojoGpuMemoryBufferImpl::Create(
-    const gfx::Size& size,
-    gfx::BufferFormat format,
-    gfx::BufferUsage usage) {
-  size_t bytes = gfx::BufferSizeForBufferFormat(size, format);
-  std::unique_ptr<base::SharedMemory> shared_memory(new base::SharedMemory);
-
-  if (!shared_memory->CreateAnonymous(bytes))
-    return nullptr;
-
-  return base::WrapUnique<gfx::GpuMemoryBuffer>(
-      new MojoGpuMemoryBufferImpl(size, format, std::move(shared_memory)));
-}
-
-MojoGpuMemoryBufferImpl* MojoGpuMemoryBufferImpl::FromClientBuffer(
-    ClientBuffer buffer) {
-  return reinterpret_cast<MojoGpuMemoryBufferImpl*>(buffer);
-}
-
-const unsigned char* MojoGpuMemoryBufferImpl::GetMemory() const {
-  return static_cast<const unsigned char*>(shared_memory_->memory());
-}
-
-bool MojoGpuMemoryBufferImpl::Map() {
-  DCHECK(!mapped_);
-  if (!shared_memory_->Map(gfx::BufferSizeForBufferFormat(size_, format_)))
-    return false;
-  mapped_ = true;
-  return true;
-}
-
-void* MojoGpuMemoryBufferImpl::memory(size_t plane) {
-  DCHECK(mapped_);
-  DCHECK_LT(plane, gfx::NumberOfPlanesForBufferFormat(format_));
-  return reinterpret_cast<uint8_t*>(shared_memory_->memory()) +
-         gfx::BufferOffsetForBufferFormat(size_, format_, plane);
-}
-
-void MojoGpuMemoryBufferImpl::Unmap() {
-  DCHECK(mapped_);
-  shared_memory_->Unmap();
-  mapped_ = false;
-}
-
-int MojoGpuMemoryBufferImpl::stride(size_t plane) const {
-  DCHECK_LT(plane, gfx::NumberOfPlanesForBufferFormat(format_));
-  return base::checked_cast<int>(gfx::RowSizeForBufferFormat(
-      size_.width(), format_, static_cast<int>(plane)));
-}
-
-gfx::GpuMemoryBufferHandle MojoGpuMemoryBufferImpl::GetHandle() const {
-  gfx::GpuMemoryBufferHandle handle;
-  handle.type = gfx::SHARED_MEMORY_BUFFER;
-  handle.handle = shared_memory_->handle();
-  handle.offset = 0;
-  handle.stride = static_cast<int32_t>(
-      gfx::RowSizeForBufferFormat(size_.width(), format_, 0));
-
-  return handle;
-}
-
-gfx::GpuMemoryBufferType MojoGpuMemoryBufferImpl::GetBufferType() const {
-  return gfx::SHARED_MEMORY_BUFFER;
-}
-
-}  // namespace mus