17854 Bundle the validation layers and enable them if –enable-vulkan-validation-layers is specified to gn (cla: yes)

17855 Roll src/third_party/skia 5a9e7fba1e3a..4f8297db64df (5 commits) (cla: yes, waiting for tree to go green)

17856 Use Float32List as Matrix storage inside the Web engine (cla: yes)

17857 Add missing case for TextInput.requestAutofill (cla: yes)

17858 Roll fuchsia/sdk/core/linux-amd64 from RPQuv… to 7Q4KR… (cla: yes, waiting for tree to go green)