WIP POC blob transport over mojo

third_party/WebKit/public/platform/blobs.mojom

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+module storage.mojom;
+
+import "mojo/common/file.mojom";
+import "mojo/common/time.mojom";
+import "url/mojo/url.mojom";
+
+struct DataElementBytes {
+  uint64 length;
+  BytesProvider data;
+};
+
+struct DataElementFile {
+  string path;
+  uint64 offset;
+  uint64 length;
+  mojo.common.mojom.Time expected_modification_time;
+};
+
+struct DataElementFilesystemURL {
+  url.mojom.Url url;
+  uint64 offset;
+  uint64 length;
+  mojo.common.mojom.Time expected_modification_time;
+};
+
+struct DataElementBlob {
+  Blob blob;
+  uint64 offset;
+  uint64 length;
+};
+
+union DataElement {
+  array<uint8> bytes;
+  DataElementBytes large_bytes;
+  DataElementFile file;
+  DataElementFilesystemURL file_filesystem;
+  DataElementBlob blob;
+};
+
+interface BlobRegistry {
+  // TODO(mek): Make this non-sync and get rid of UUID once enough of the rest
+  // of the system has been migrated to use mojo for blobs.
+  [Sync] Register(Blob& blob, string uuid, string content_type, string content_disposition, array<DataElement> elements) => ();
+
+  DeprecatedGetBlob(string uuid, Blob& blob);
+};
+
+interface Blob {
+  Clone(Blob& blob);
+
+  // Don't call this method. Should only be used by the blob system internals.
+  InternalGetUUID() => (string uuid);
+};
+
+interface BytesProvider {
+  RequestAsStream(handle<data_pipe_producer> pipe);
+  RequestAsFile(uint64 source_offset, uint64 source_size, mojo.common.mojom.File file, uint64 file_offset) => (mojo.common.mojom.Time? time_file_modified);
+};
+
+
+