Intersection Observer first draft

Source/core/dom/IntersectionObserver.idl

Index: Source/core/dom/IntersectionObserver.idl
diff --git a/Source/core/dom/IntersectionObserver.idl b/Source/core/dom/IntersectionObserver.idl
new file mode 100644
index 0000000000000000000000000000000000000000..c2e2ce86defc4586320eabc8dc3cfeab2fb7a2cc
--- /dev/null
+++ b/Source/core/dom/IntersectionObserver.idl
@@ -0,0 +1,17 @@
+// Copyright 2015 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.
+
+// http://w3c.github.io/performance-timeline/#idl-def-PerformanceObserverCallback
+callback IntersectionObserverCallback = void (sequence <IntersectionObserverEntry> entries, IntersectionObserver observer);
+
+// https://

[ojan, 2015/09/21 03:49:09]

?

[MikeB, 2015/09/24 19:04:04]

Done.

+[
+    CustomConstructor(IntersectionObserverCallback callback),
+    RuntimeEnabled=IntersectionObserver,
+    WillBeGarbageCollected,
+] interface IntersectionObserver {
+    [RaisesException] void observe(Element target, IntersectionObserverInit options);
+    void disconnect();
+    sequence <IntersectionObserverEntry> takeRecords();

[ojan, 2015/09/21 03:49:09]

Nit: no space after "sequence".

[MikeB, 2015/09/24 19:04:03]

Done.

+};