Remove prefixed EME.

third_party/WebKit/Source/core/html/MediaKeyEventInit.idl

Index: third_party/WebKit/Source/core/html/MediaKeyEventInit.idl
diff --git a/third_party/WebKit/Source/core/html/MediaKeyEventInit.idl b/third_party/WebKit/Source/core/html/MediaKeyEventInit.idl
deleted file mode 100644
index b8eb75a744e86f964a2526fb33ec15ea966aade6..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/core/html/MediaKeyEventInit.idl
+++ /dev/null
@@ -1,13 +0,0 @@
-// Copyright 2014 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.
-
-dictionary MediaKeyEventInit : EventInit {
-    DOMString keySystem;
-    DOMString sessionId;
-    Uint8Array initData;
-    Uint8Array message;
-    DOMString defaultURL;
-    MediaKeyError? errorCode;
-    unsigned short systemCode;
-};