gpu: Directly cast ClientBuffer to gfx::GpuMemoryBuffer

services/ui/ws/mus_gpu_memory_buffer_manager.cc

Index: services/ui/ws/mus_gpu_memory_buffer_manager.cc
diff --git a/services/ui/ws/mus_gpu_memory_buffer_manager.cc b/services/ui/ws/mus_gpu_memory_buffer_manager.cc
index 8d73390fc888fe9963e4f90b2c806492fda8f129..1dae509d8a1379ff0be5d2435644ba85e4be364d 100644
--- a/services/ui/ws/mus_gpu_memory_buffer_manager.cc
+++ b/services/ui/ws/mus_gpu_memory_buffer_manager.cc
@@ -60,12 +60,6 @@ MusGpuMemoryBufferManager::CreateGpuMemoryBufferFromHandle(
   return nullptr;
 }
 
-gfx::GpuMemoryBuffer*
-MusGpuMemoryBufferManager::GpuMemoryBufferFromClientBuffer(
-    ClientBuffer buffer) {
-  return gpu::GpuMemoryBufferImpl::FromClientBuffer(buffer);
-}
-
 void MusGpuMemoryBufferManager::SetDestructionSyncToken(
     gfx::GpuMemoryBuffer* buffer,
     const gpu::SyncToken& sync_token) {