Update globals to chrome 54.0.2840.16.

Change-Id: I38db4755bf98df61b84729a760933b76cf21e0c6
diff --git a/dev/core/src/com/google/gwt/dev/js/globals/chrome.txt b/dev/core/src/com/google/gwt/dev/js/globals/chrome.txt
index df795b9..d7b3c43 100644
--- a/dev/core/src/com/google/gwt/dev/js/globals/chrome.txt
+++ b/dev/core/src/com/google/gwt/dev/js/globals/chrome.txt
@@ -31,6 +31,7 @@
 BluetoothRemoteGATTService
 BluetoothUUID
 Boolean
+BroadcastChannel
 ByteLengthQueuingStrategy
 CDATASection
 CSS
@@ -79,6 +80,7 @@
 CredentialsContainer
 Crypto
 CryptoKey
+CustomElementRegistry
 CustomEvent
 DOMError
 DOMException
@@ -318,6 +320,7 @@
 PromiseRejectionEvent
 PushManager
 PushSubscription
+PushSubscriptionOptions
 RGBColor
 RTCCertificate
 RTCIceCandidate
@@ -609,6 +612,7 @@
 console
 createImageBitmap
 crypto
+customElements
 decodeURI
 decodeURIComponent
 defaultStatus