exo: Directly create GpuMemoryBufferImpl when a handle is available.

services/ui/common/server_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/common/server_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"
@@ skipping 49 matching lines @@
   gfx::GpuMemoryBufferHandle handle = CreateGpuMemoryBufferHandle(
       id, client_id_, size, format, usage, surface_handle);
   if (handle.is_null())
     return nullptr;
   return gpu::GpuMemoryBufferImpl::CreateFromHandle(
       handle, size, format, usage,
       base::Bind(&ServerGpuMemoryBufferManager::DestroyGpuMemoryBuffer,
                  weak_factory_.GetWeakPtr(), id, client_id_));
 }
 
-std::unique_ptr<gfx::GpuMemoryBuffer>
-ServerGpuMemoryBufferManager::CreateGpuMemoryBufferFromHandle(
-    const gfx::GpuMemoryBufferHandle& handle,
-    const gfx::Size& size,
-    gfx::BufferFormat format) {
-  NOTIMPLEMENTED();
-  return nullptr;
-}
-
 void ServerGpuMemoryBufferManager::SetDestructionSyncToken(
     gfx::GpuMemoryBuffer* buffer,
     const gpu::SyncToken& sync_token) {
   DCHECK(CalledOnValidThread());
   static_cast<gpu::GpuMemoryBufferImpl*>(buffer)->set_destruction_sync_token(
       sync_token);
 }
 
 void ServerGpuMemoryBufferManager::DestroyGpuMemoryBuffer(
     gfx::GpuMemoryBufferId id,
     int client_id,
     const gpu::SyncToken& sync_token) {
   DCHECK(CalledOnValidThread());
   if (native_buffers_[client_id].erase(id))
     gpu_service_->DestroyGpuMemoryBuffer(id, client_id, sync_token);
 }
 
 void ServerGpuMemoryBufferManager::DestroyAllGpuMemoryBufferForClient(
     int client_id) {
   DCHECK(CalledOnValidThread());
   for (gfx::GpuMemoryBufferId id : native_buffers_[client_id])
     gpu_service_->DestroyGpuMemoryBuffer(id, client_id, gpu::SyncToken());
   native_buffers_.erase(client_id);
 }
 
 }  // namespace ui