IndexedDB Observers

third_party/WebKit/Source/modules/indexeddb/IDBObserverChanges.idl

Index: third_party/WebKit/Source/modules/indexeddb/IDBObserverChanges.idl
diff --git a/third_party/WebKit/Source/modules/indexeddb/IDBObserverChanges.idl b/third_party/WebKit/Source/modules/indexeddb/IDBObserverChanges.idl
new file mode 100644
index 0000000000000000000000000000000000000000..14c24efa35cffa855ee85041601cf50d6c5c233d
--- /dev/null
+++ b/third_party/WebKit/Source/modules/indexeddb/IDBObserverChanges.idl
@@ -0,0 +1,17 @@
+// Copyright 2016 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.
+
+// https://github.com/WICG/indexed-db-observers/blob/gh-pages/EXPLAINER.md#changes-argument
+
+[
+   RuntimeEnabled=IDBObserver
+] dictionary IDBObserverChanges {
+    IDBDatabase db;
+    // Transaction contains the same object stores as the transaction on which IDBTransaction.observe was called.
+    IDBTransaction transaction;
+    // This is the javascript Map<String, sequence<IDBObserverChangesRecord>>,
+    // where the key is the object store name.
+    any records;

[haraken, 2016/06/07 00:21:41]

+bashi: Is this an expected usage? i.e., I want to make sure that this is the
best way to express map<string, sequence<>> in IDL dictionary.

[dmurph, 2016/06/07 18:42:16]

Unfortunately maplike only applies to the whole interface. See here:
https://heycam.github.io/webidl/#idl-maplike

So we have to use 'any', or I guess create a whole new interface?

+};
+