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

modules/app_banner/BeforeInstallPromptEvent.idl

Index: modules/app_banner/BeforeInstallPromptEvent.idl
diff --git a/modules/app_banner/BeforeInstallPromptEvent.idl b/modules/app_banner/BeforeInstallPromptEvent.idl
new file mode 100644
index 0000000000000000000000000000000000000000..691aa0c54f8c17d9688c09b995c88e6715e1c20c
--- /dev/null
+++ b/modules/app_banner/BeforeInstallPromptEvent.idl
@@ -0,0 +1,12 @@
+// 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.
+
+[
+    Constructor(DOMString type, optional BeforeInstallPromptEventInit eventInitDict),
+    RuntimeEnabled=AppBanner,
+] interface BeforeInstallPromptEvent : Event {
+    readonly attribute sequence<DOMString> platforms;
+    [CallWith=ScriptState] readonly attribute Promise<DOMString> userChoice;
+    [CallWith=ScriptState] Promise<void> prompt();
+};