gpu: Delete unnecessary code.

services/ui/ws/mus_gpu_memory_buffer_manager.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.
 
 #include "services/ui/ws/mus_gpu_memory_buffer_manager.h"
 
 #include "base/logging.h"
 #include "gpu/ipc/client/gpu_memory_buffer_impl.h"
 #include "gpu/ipc/client/gpu_memory_buffer_impl_shared_memory.h"
 #include "gpu/ipc/common/gpu_memory_buffer_support.h"
 #include "services/ui/common/generic_shared_memory_id_generator.h"
 #include "services/ui/gpu/gpu_service_internal.h"
 
 namespace ui {
 
-namespace {
-
-bool IsNativeGpuMemoryBufferFactoryConfigurationSupported(
-    gfx::BufferFormat format,
-    gfx::BufferUsage usage) {
-  switch (gpu::GetNativeGpuMemoryBufferType()) {
-    case gfx::SHARED_MEMORY_BUFFER:
-      return false;
-    case gfx::IO_SURFACE_BUFFER:
-    case gfx::SURFACE_TEXTURE_BUFFER:
-    case gfx::OZONE_NATIVE_PIXMAP:
-      return gpu::IsNativeGpuMemoryBufferConfigurationSupported(format, usage);
-    default:
-      NOTREACHED();
-      return false;
-  }
-}
-
-}  // namespace
-
 namespace ws {
 
 MusGpuMemoryBufferManager::MusGpuMemoryBufferManager(
     GpuServiceInternal* gpu_service,
     int client_id)
     : gpu_service_(gpu_service), client_id_(client_id), weak_factory_(this) {}
 
 MusGpuMemoryBufferManager::~MusGpuMemoryBufferManager() {}
 
 std::unique_ptr<gfx::GpuMemoryBuffer>
 MusGpuMemoryBufferManager::AllocateGpuMemoryBuffer(
     const gfx::Size& size,
     gfx::BufferFormat format,
     gfx::BufferUsage usage,
     gpu::SurfaceHandle surface_handle) {
   gfx::GpuMemoryBufferId id = GetNextGenericSharedMemoryId();
   const bool is_native =
-      IsNativeGpuMemoryBufferFactoryConfigurationSupported(format, usage);
+      gpu::IsNativeGpuMemoryBufferConfigurationSupported(format, usage);
   if (is_native) {
     gfx::GpuMemoryBufferHandle handle = gpu_service_->CreateGpuMemoryBuffer(
         id, size, format, usage, client_id_, surface_handle);
     if (handle.is_null())
       return nullptr;
     return gpu::GpuMemoryBufferImpl::CreateFromHandle(
         handle, size, format, usage,
         base::Bind(&MusGpuMemoryBufferManager::DestroyGpuMemoryBuffer,
                    weak_factory_.GetWeakPtr(), id, client_id_, is_native));
   }
@@ skipping 33 matching lines @@
     int client_id,
     bool is_native,
     const gpu::SyncToken& sync_token) {
   if (is_native) {
     gpu_service_->DestroyGpuMemoryBuffer(id, client_id, sync_token);
   }
 }
 
 }  // namespace ws
 }  // namespace ui