exo: Directly create GpuMemoryBufferImpl when a handle is available.

services/ui/public/cpp/gpu/client_gpu_memory_buffer_manager.cc

Index: services/ui/public/cpp/gpu/client_gpu_memory_buffer_manager.cc
diff --git a/services/ui/public/cpp/gpu/client_gpu_memory_buffer_manager.cc b/services/ui/public/cpp/gpu/client_gpu_memory_buffer_manager.cc
index ab51a931313a0f48ceca3fdcd58ee6b12414392b..e91fce823c9a275b56d5c4d4c2ac701edd965d31 100644
--- a/services/ui/public/cpp/gpu/client_gpu_memory_buffer_manager.cc
+++ b/services/ui/public/cpp/gpu/client_gpu_memory_buffer_manager.cc
@@ -131,15 +131,6 @@ ClientGpuMemoryBufferManager::CreateGpuMemoryBuffer(
   return std::move(buffer);
 }
 
-std::unique_ptr<gfx::GpuMemoryBuffer>
-ClientGpuMemoryBufferManager::CreateGpuMemoryBufferFromHandle(
-    const gfx::GpuMemoryBufferHandle& handle,
-    const gfx::Size& size,
-    gfx::BufferFormat format) {
-  NOTIMPLEMENTED();
-  return nullptr;
-}
-
 void ClientGpuMemoryBufferManager::SetDestructionSyncToken(
     gfx::GpuMemoryBuffer* buffer,
     const gpu::SyncToken& sync_token) {