Move stash_backend into extensions/browser/mojo.

Review URL: https://codereview.chromium.org/638273004

Cr-Commit-Position: refs/heads/master@{#301024}

1 files changed, 32 insertions, 0 deletions

diff --git a/extensions/common/mojo/stash.mojom b/extensions/common/mojo/stash.mojom
new file mode 100644
index 0000000..734697b
--- /dev/null
+++ b/extensions/common/mojo/stash.mojom
@@ -0,0 +1,32 @@
+// Copyright 2014 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 extensions {
+
+// A stashed client object. This contains the serialized bytes and handles,
+// stored in |data| and |handles|, respectively, of a mojo struct of the
+// serialized representation of the client object.
+struct StashedObject {
+  // A client identifier for this stashed object. This is to allow the client to
+  // reconstitute the correct serialization struct from this StashedObject.
+  string id;
+
+  // The serialized data of the serialization struct.
+  array<uint8> data;
+
+  // The handles contained within the serialization struct.
+  array<handle> stashed_handles;
+};
+
+interface StashService {
+  // Adds |stashed_objects| to the stash. StashedObjects are stored in memory in
+  // the browser process for as long as the extension that owns them remains
+  // enabled and the browser process runs.
+  AddToStash(array<StashedObject> stashed_objects);
+
+  // Returns all stashed objects.
+  RetrieveStash() => (array<StashedObject> stash);
+};
+
+}