Delete WebGraphicsContext3DCommandBufferImpl.

content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.cc

-// Copyright (c) 2012 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/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
-
-#include "third_party/khronos/GLES2/gl2.h"
-#ifndef GL_GLEXT_PROTOTYPES
-#define GL_GLEXT_PROTOTYPES 1
-#endif
-#include "third_party/khronos/GLES2/gl2ext.h"
-
-#include <algorithm>
-#include <map>
-#include <memory>
-
-#include "base/atomicops.h"
-#include "base/bind.h"
-#include "base/command_line.h"
-#include "base/lazy_instance.h"
-#include "base/logging.h"
-#include "base/message_loop/message_loop.h"
-#include "base/metrics/field_trial.h"
-#include "base/metrics/histogram.h"
-#include "base/profiler/scoped_tracker.h"
-#include "base/trace_event/trace_event.h"
-#include "gpu/GLES2/gl2extchromium.h"
-#include "gpu/command_buffer/client/gles2_cmd_helper.h"
-#include "gpu/command_buffer/client/gles2_implementation.h"
-#include "gpu/command_buffer/client/gpu_switches.h"
-#include "gpu/command_buffer/client/shared_memory_limits.h"
-#include "gpu/command_buffer/client/transfer_buffer.h"
-#include "gpu/command_buffer/common/constants.h"
-#include "gpu/command_buffer/common/gpu_memory_allocation.h"
-#include "gpu/command_buffer/common/mailbox.h"
-#include "gpu/ipc/client/gpu_channel_host.h"
-#include "gpu/skia_bindings/gl_bindings_skia_cmd_buffer.h"
-#include "third_party/skia/include/core/SkTypes.h"
-
-namespace content {
-
-WebGraphicsContext3DCommandBufferImpl::WebGraphicsContext3DCommandBufferImpl() {
-}
-
-WebGraphicsContext3DCommandBufferImpl::
-    ~WebGraphicsContext3DCommandBufferImpl() {}
-
-bool WebGraphicsContext3DCommandBufferImpl::MaybeInitializeGL(
-    gpu::SurfaceHandle surface_handle,
-    const GURL& active_url,
-    gpu::GpuChannelHost* host,
-    gfx::GpuPreference gpu_preference,
-    bool automatic_flushes,
-    const gpu::SharedMemoryLimits& memory_limits,
-    gpu::CommandBufferProxyImpl* shared_command_buffer,
-    scoped_refptr<gpu::gles2::ShareGroup> share_group,
-    const gpu::gles2::ContextCreationAttribHelper& attributes,
-    command_buffer_metrics::ContextType context_type) {
-  DCHECK_EQ(!!shared_command_buffer, !!share_group);
-  TRACE_EVENT0("gpu", "WebGfxCtx3DCmdBfrImpl::MaybeInitializeGL");
-
-  DCHECK(attributes.buffer_preserved);
-  std::vector<int32_t> serialized_attributes;
-  attributes.Serialize(&serialized_attributes);
-
-  // Create a proxy to a command buffer in the GPU process.
-  command_buffer_ = host->CreateCommandBuffer(
-      surface_handle, gfx::Size(), shared_command_buffer,
-      gpu::GpuChannelHost::kDefaultStreamId,
-      gpu::GpuChannelHost::kDefaultStreamPriority, serialized_attributes,
-      active_url, gpu_preference);
-
-  if (!command_buffer_) {
-    DLOG(ERROR) << "GpuChannelHost failed to create command buffer.";
-    command_buffer_metrics::UmaRecordContextInitFailed(context_type);
-    return false;
-  }
-
-  // The GLES2 helper writes the command buffer protocol.
-  gles2_helper_.reset(new gpu::gles2::GLES2CmdHelper(command_buffer_.get()));
-  gles2_helper_->SetAutomaticFlushes(automatic_flushes);
-  if (!gles2_helper_->Initialize(memory_limits.command_buffer_size)) {
-    DLOG(ERROR) << "Failed to initialize GLES2CmdHelper.";
-    return false;
-  }
-
-  // The transfer buffer is used to copy resources between the client
-  // process and the GPU process.
-  transfer_buffer_ .reset(new gpu::TransferBuffer(gles2_helper_.get()));
-
-  const bool bind_generates_resource = attributes.bind_generates_resource;
-  const bool lose_context_when_out_of_memory =
-      attributes.lose_context_when_out_of_memory;
-  const bool support_client_side_arrays = false;
-
-  // The GLES2Implementation exposes the OpenGLES2 API, as well as the
-  // gpu::ContextSupport interface.
-  real_gl_.reset(new gpu::gles2::GLES2Implementation(
-      gles2_helper_.get(), std::move(share_group), transfer_buffer_.get(),
-      bind_generates_resource, lose_context_when_out_of_memory,
-      support_client_side_arrays, command_buffer_.get()));
-  if (!real_gl_->Initialize(memory_limits.start_transfer_buffer_size,
-                            memory_limits.min_transfer_buffer_size,
-                            memory_limits.max_transfer_buffer_size,
-                            memory_limits.mapped_memory_reclaim_limit)) {
-    DLOG(ERROR) << "Failed to initialize GLES2Implementation.";
-    return false;
-  }
-
-  real_gl_->TraceBeginCHROMIUM("WebGraphicsContext3D", "CommandBufferContext");
-  return true;
-}
-
-bool WebGraphicsContext3DCommandBufferImpl::InitializeOnCurrentThread(
-    gpu::SurfaceHandle surface_handle,
-    const GURL& active_url,
-    gpu::GpuChannelHost* host,
-    gfx::GpuPreference gpu_preference,
-    bool automatic_flushes,
-    const gpu::SharedMemoryLimits& memory_limits,
-    gpu::CommandBufferProxyImpl* shared_command_buffer,
-    scoped_refptr<gpu::gles2::ShareGroup> share_group,
-    const gpu::gles2::ContextCreationAttribHelper& attributes,
-    command_buffer_metrics::ContextType context_type) {
-  if (!MaybeInitializeGL(surface_handle, active_url, host, gpu_preference,
-                         automatic_flushes, memory_limits,
-                         shared_command_buffer, std::move(share_group),
-                         attributes, context_type))
-    return false;
-  if (gpu::error::IsError(command_buffer_->GetLastError())) {
-    DLOG(ERROR) << "Context dead on arrival. Last error: "
-                << command_buffer_->GetLastError();
-    return false;
-  }
-
-  return true;
-}
-
-}  // namespace content