Test

cc/ipc/compositor_frame_metadata_struct_traits.cc

Index: cc/ipc/compositor_frame_metadata_struct_traits.cc
diff --git a/cc/ipc/compositor_frame_metadata_struct_traits.cc b/cc/ipc/compositor_frame_metadata_struct_traits.cc
index fc3d85bfc145f7a978be5655df5f92d665b35cbe..30331a5bb6cce7fba2d37ea8e8191781f1bafd3f 100644
--- a/cc/ipc/compositor_frame_metadata_struct_traits.cc
+++ b/cc/ipc/compositor_frame_metadata_struct_traits.cc
@@ -26,6 +26,18 @@ bool StructTraits<cc::mojom::CompositorFrameMetadataDataView,
     return false;
   }
 
+  std::vector<cc::mojom::SharedBitmapInfoPtr> shared_bitmaps_to_register;
+  if (!data.ReadSharedBitmapsToRegister(&shared_bitmaps_to_register))
+    return false;
+  for (const auto& entry : shared_bitmaps_to_register) {
+    base::SharedMemoryHandle memory_handle;
+    size_t size;
+    MojoResult result = mojo::UnwrapSharedMemoryHandle(
+        std::move(entry->buffer), &memory_handle, &size, NULL);
+    DCHECK_EQ(result, MOJO_RESULT_OK);
+    out->shared_bitmaps_to_register.push_back({entry->id, memory_handle, size});
+  }
+
   out->min_page_scale_factor = data.min_page_scale_factor();
   out->max_page_scale_factor = data.max_page_scale_factor();
   out->root_overflow_x_hidden = data.root_overflow_x_hidden();