exo: Directly create GpuMemoryBufferImpl when a handle is available.

cc/test/test_gpu_memory_buffer_manager.cc

 // Copyright 2014 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 "cc/test/test_gpu_memory_buffer_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/logging.h"
@@ skipping 154 matching lines @@
 
   last_gpu_memory_buffer_id_ += 1;
   std::unique_ptr<gfx::GpuMemoryBuffer> result(new GpuMemoryBufferImpl(
       this, last_gpu_memory_buffer_id_, size, format, std::move(shared_memory),
       0, base::checked_cast<int>(
              gfx::RowSizeForBufferFormat(size.width(), format, 0))));
   buffers_[last_gpu_memory_buffer_id_] = result.get();
   return result;
 }
 
-std::unique_ptr<gfx::GpuMemoryBuffer>
-TestGpuMemoryBufferManager::CreateGpuMemoryBufferFromHandle(
-    const gfx::GpuMemoryBufferHandle& handle,
-    const gfx::Size& size,
-    gfx::BufferFormat format) {
-  if (handle.type != gfx::SHARED_MEMORY_BUFFER)
-    return nullptr;
-
-  last_gpu_memory_buffer_id_ += 1;
-  std::unique_ptr<gfx::GpuMemoryBuffer> result(new GpuMemoryBufferImpl(
-      this, last_gpu_memory_buffer_id_, size, format,
-      base::MakeUnique<base::SharedMemory>(handle.handle, false), handle.offset,
-      handle.stride));
-  buffers_[last_gpu_memory_buffer_id_] = result.get();
-  return result;
-}
-
 void TestGpuMemoryBufferManager::SetDestructionSyncToken(
     gfx::GpuMemoryBuffer* buffer,
     const gpu::SyncToken& sync_token) {}
 
 }  // namespace cc