Delete SharedWorkerContextProviderFactory

It's not used anywhere.

Bug: 936425
Change-Id: Ifff668d1485060a6fa41e0b6f6a2452f45722e7c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2005868Reviewed-by: Jonathan Ross <jonross@chromium.org>
Commit-Queue: kylechar <kylechar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#732980}

services/viz/public/cpp/gpu/BUILD.gn

@@ -43,23 +43,14 @@ source_set("gpu") {
     "//mojo/public/cpp/system",
     "//services/service_manager/public/cpp",
     "//services/viz/public/mojom",
-    "//ui/base:features",
     "//ui/gl",
   ]
-
-  if (use_aura || is_mac) {
-    public += [ "shared_worker_context_provider_factory.h" ]
-
-    sources += [ "shared_worker_context_provider_factory.cc" ]
-  }
 }
 
 source_set("tests") {
   testonly = true
 
-  sources = [
-    "gpu_unittest.cc",
-  ]
+  sources = [ "gpu_unittest.cc" ]
 
   deps = [
     "//base",

services/viz/public/cpp/gpu/DEPS

@@ -2,7 +2,6 @@ include_rules = [
   "+components/viz/common/gpu",
   "+gpu",
   "+third_party/skia",
-  "+ui/base/ui_base_features.h",
   "+ui/gfx",
   "+ui/gl",
 ]

services/viz/public/cpp/gpu/shared_worker_context_provider_factory.cc

-// Copyright 2018 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 "services/viz/public/cpp/gpu/shared_worker_context_provider_factory.h"
-
-#include "components/viz/common/gpu/raster_context_provider.h"
-#include "gpu/command_buffer/client/raster_interface.h"
-#include "gpu/command_buffer/common/context_result.h"
-#include "gpu/ipc/client/gpu_channel_host.h"
-#include "services/viz/public/cpp/gpu/context_provider_command_buffer.h"
-#include "ui/base/ui_base_features.h"
-
-namespace viz {
-namespace {
-
-bool CheckWorkerContextLost(RasterContextProvider* context_provider) {
-  if (!context_provider)
-    return false;
-
-  RasterContextProvider::ScopedRasterContextLock lock(context_provider);
-  return lock.RasterInterface()->GetGraphicsResetStatusKHR() != GL_NO_ERROR;
-}
-
-}  // namespace
-
-SharedWorkerContextProviderFactory::SharedWorkerContextProviderFactory(
-    int32_t stream_id,
-    gpu::SchedulingPriority priority,
-    const GURL& identifying_url,
-    command_buffer_metrics::ContextType context_type)
-    : stream_id_(stream_id),
-      priority_(priority),
-      identifying_url_(identifying_url),
-      context_type_(context_type) {}
-
-SharedWorkerContextProviderFactory::~SharedWorkerContextProviderFactory() =
-    default;
-
-void SharedWorkerContextProviderFactory::Reset() {
-  provider_ = nullptr;
-}
-
-gpu::ContextResult SharedWorkerContextProviderFactory::Validate(
-    scoped_refptr<gpu::GpuChannelHost> gpu_channel_host,
-    gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager) {
-  if (CheckWorkerContextLost(provider_.get()))
-    provider_ = nullptr;
-
-  if (provider_)
-    return gpu::ContextResult::kSuccess;
-
-  const auto& gpu_feature_info = gpu_channel_host->gpu_feature_info();
-  bool enable_oop_rasterization =
-      features::IsUiGpuRasterizationEnabled() &&
-      gpu_feature_info.status_values[gpu::GPU_FEATURE_TYPE_OOP_RASTERIZATION] ==
-          gpu::kGpuFeatureStatusEnabled;
-  bool enable_gpu_rasterization =
-      features::IsUiGpuRasterizationEnabled() && !enable_oop_rasterization;
-
-  // TODO(crbug.com/909568): refactor
-  // RenderThreadImpl::SharedCompositorWorkerContextProvider to use this.
-  const bool need_alpha_channel = false;
-  const bool support_locking = true;
-  const bool support_gles2_interface = enable_gpu_rasterization;
-  const bool support_raster_interface = true;
-  const bool support_grcontext = enable_gpu_rasterization;
-  const bool support_oopr = enable_oop_rasterization;
-
-  provider_ = CreateContextProvider(
-      std::move(gpu_channel_host), gpu_memory_buffer_manager,
-      gpu::kNullSurfaceHandle, need_alpha_channel, /*support_stencil=*/false,
-      support_locking, support_gles2_interface, support_raster_interface,
-      support_grcontext, support_oopr, context_type_);
-  auto result = provider_->BindToCurrentThread();
-  if (result != gpu::ContextResult::kSuccess)
-    provider_ = nullptr;
-  return result;
-}
-
-scoped_refptr<RasterContextProvider>
-SharedWorkerContextProviderFactory::CreateContextProvider(
-    scoped_refptr<gpu::GpuChannelHost> gpu_channel_host,
-    gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
-    gpu::SurfaceHandle surface_handle,
-    bool need_alpha_channel,
-    bool need_stencil_bits,
-    bool support_locking,
-    bool support_gles2_interface,
-    bool support_raster_interface,
-    bool support_grcontext,
-    bool support_oopr,
-    command_buffer_metrics::ContextType type) {
-  DCHECK(gpu_channel_host);
-
-  gpu::ContextCreationAttribs attributes;
-  attributes.alpha_size = need_alpha_channel ? 8 : -1;
-  attributes.depth_size = 0;
-  attributes.stencil_size = need_stencil_bits ? 8 : 0;
-  attributes.samples = 0;
-  attributes.sample_buffers = 0;
-  attributes.bind_generates_resource = false;
-  attributes.lose_context_when_out_of_memory = true;
-  attributes.buffer_preserved = false;
-  attributes.enable_gles2_interface = support_gles2_interface;
-  attributes.enable_raster_interface = support_raster_interface;
-  attributes.enable_oop_rasterization = support_oopr;
-  gpu::SharedMemoryLimits memory_limits =
-      gpu::SharedMemoryLimits::ForDisplayCompositor();
-
-  constexpr bool automatic_flushes = false;
-
-  return base::MakeRefCounted<ContextProviderCommandBuffer>(
-      std::move(gpu_channel_host), gpu_memory_buffer_manager, stream_id_,
-      priority_, surface_handle, identifying_url_, automatic_flushes,
-      support_locking, support_grcontext, memory_limits, attributes, type);
-}
-
-}  // namespace viz

services/viz/public/cpp/gpu/shared_worker_context_provider_factory.h

-// Copyright 2018 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.
-
-#ifndef SERVICES_VIZ_PUBLIC_CPP_GPU_SHARED_WORKER_CONTEXT_PROVIDER_FACTORY_H_
-#define SERVICES_VIZ_PUBLIC_CPP_GPU_SHARED_WORKER_CONTEXT_PROVIDER_FACTORY_H_
-
-#include <stdint.h>
-
-#include "base/macros.h"
-#include "base/memory/scoped_refptr.h"
-#include "gpu/ipc/common/surface_handle.h"
-#include "url/gurl.h"
-
-namespace gpu {
-class GpuChannelHost;
-class GpuMemoryBufferManager;
-
-enum class ContextResult;
-enum class SchedulingPriority;
-}  // namespace gpu
-
-namespace viz {
-
-namespace command_buffer_metrics {
-enum class ContextType;
-}
-
-class RasterContextProvider;
-
-// SharedWorkerContextProviderFactory is responsible for creation, and owning
-// RasterContextProvider.
-class SharedWorkerContextProviderFactory {
- public:
-  SharedWorkerContextProviderFactory(
-      int32_t stream_id,
-      gpu::SchedulingPriority priority,
-      const GURL& identifying_url,
-      command_buffer_metrics::ContextType context_type);
-  ~SharedWorkerContextProviderFactory();
-
-  // Drops the reference to |provider_|. This ensures the next time Validate()
-  // is called a new RasterContextProvider is created.
-  void Reset();
-
-  // Validates |provider_|, and if necessary attempts to recreate. Returns
-  // creation status. Use provider() to access the created
-  // RasterContextProvider.
-  gpu::ContextResult Validate(
-      scoped_refptr<gpu::GpuChannelHost> gpu_channel_host,
-      gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager);
-
-  scoped_refptr<RasterContextProvider> provider() { return provider_; }
-
- private:
-  scoped_refptr<RasterContextProvider> CreateContextProvider(
-      scoped_refptr<gpu::GpuChannelHost> gpu_channel_host,
-      gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
-      gpu::SurfaceHandle surface_handle,
-      bool need_alpha_channel,
-      bool need_stencil_bits,
-      bool support_locking,
-      bool support_gles2_interface,
-      bool support_raster_interface,
-      bool support_grcontext,
-      bool support_oopr,
-      command_buffer_metrics::ContextType type);
-
-  const int32_t stream_id_;
-  const gpu::SchedulingPriority priority_;
-  const GURL identifying_url_;
-  const command_buffer_metrics::ContextType context_type_;
-  scoped_refptr<RasterContextProvider> provider_;
-
-  DISALLOW_COPY_AND_ASSIGN(SharedWorkerContextProviderFactory);
-};
-
-}  // namespace viz
-
-#endif  // SERVICES_VIZ_PUBLIC_CPP_GPU_SHARED_WORKER_CONTEXT_PROVIDER_FACTORY_H_