Add a size parameter to SharedMemoryHandle.

chrome/gpu/arc_gpu_video_decode_accelerator.cc

Index: chrome/gpu/arc_gpu_video_decode_accelerator.cc
diff --git a/chrome/gpu/arc_gpu_video_decode_accelerator.cc b/chrome/gpu/arc_gpu_video_decode_accelerator.cc
index 63e8ff83e7a913f0bb076255aedb6b28c8b4f091..9abb435ca1864da71dce12c8a67a33011fb7dea8 100644
--- a/chrome/gpu/arc_gpu_video_decode_accelerator.cc
+++ b/chrome/gpu/arc_gpu_video_decode_accelerator.cc
@@ -297,13 +297,15 @@ void ArcGpuVideoDecodeAccelerator::UseBuffer(PortType port,
       }
       CreateInputRecord(bitstream_buffer_id, index, metadata.timestamp);
       // TODO(rockot): Pass GUIDs through Mojo. https://crbug.com/713763.
-      // TODO(erikchen): This fd comes from a mojo::ScopedHandle in
+      // TODO(rockot): This fd comes from a mojo::ScopedHandle in
       // GpuArcVideoService::BindSharedMemory. That should be passed through,
       // rather than pulling out the fd. https://crbug.com/713763.
+      // TODO(rockot): Pass through a real size rather than |0|.
       base::UnguessableToken guid = base::UnguessableToken::Create();
       vda_->Decode(media::BitstreamBuffer(
           bitstream_buffer_id,
-          base::SharedMemoryHandle(base::FileDescriptor(dup_fd, true), guid),
+          base::SharedMemoryHandle(base::FileDescriptor(dup_fd, true), 0u,
+                                   guid),
           metadata.bytes_used, input_info->offset));
       break;
     }