| Index: gpu/ipc/client/gpu_memory_buffer_impl_io_surface.cc | 
| diff --git a/gpu/ipc/client/gpu_memory_buffer_impl_io_surface.cc b/gpu/ipc/client/gpu_memory_buffer_impl_io_surface.cc | 
| index a87bd3046b630ba78efbc34f303a0e8ac41d8169..94629c08ed0b9ab35cdc54d23719370b6bccee1d 100644 | 
| --- a/gpu/ipc/client/gpu_memory_buffer_impl_io_surface.cc | 
| +++ b/gpu/ipc/client/gpu_memory_buffer_impl_io_surface.cc | 
| @@ -24,6 +24,8 @@ uint32_t LockFlags(gfx::BufferUsage usage) { | 
| case gfx::BufferUsage::SCANOUT_CPU_READ_WRITE: | 
| case gfx::BufferUsage::GPU_READ_CPU_READ_WRITE_PERSISTENT: | 
| return 0; | 
| +    case gfx::BufferUsage::SCANOUT_ASYNC: | 
| +      break; | 
| } | 
| NOTREACHED(); | 
| return 0; | 
|  |