Updated to Chrome 45 (2454) moved from SVN to git.

core/events/CustomEvent.idl

Index: core/events/CustomEvent.idl
diff --git a/core/events/CustomEvent.idl b/core/events/CustomEvent.idl
index 4ad348b3126903515d4be1c39d1f68abec2aa6f2..4d4cb085c639989686d3f31d2cb996645c8f84df 100644
--- a/core/events/CustomEvent.idl
+++ b/core/events/CustomEvent.idl
@@ -23,13 +23,17 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+// https://dom.spec.whatwg.org/#interface-customevent
+
 [
-    EventConstructor,
+    Constructor(DOMString type, optional CustomEventInit eventInitDict),
+    Exposed=(Window,Worker),
 ] interface CustomEvent : Event {
-    [Custom=Getter, InitializedByEventConstructor] readonly attribute any detail;
+    [Custom=Getter] readonly attribute any detail;
 
-    [Custom] void initCustomEvent([Default=Undefined] optional DOMString typeArg,
-                                  [Default=Undefined] optional boolean canBubbleArg,
-                                  [Default=Undefined] optional boolean cancelableArg,
-                                  [Default=Undefined] optional any detailArg);
+    // FIXME: initCustomEvent()'s arguments should not be optional.
+    [Custom, Measure] void initCustomEvent([Default=Undefined] optional DOMString type,
+                                           [Default=Undefined] optional boolean bubbles,
+                                           [Default=Undefined] optional boolean cancelable,
+                                           [Default=Undefined] optional any detail);
 };