Strip unused functionality from dart:html and fix strong mode errors. Switch from blacklisting pure…

sdk/lib/js/dartium/cached_patches.dart

 // START_OF_CACHED_PATCHES
 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // DO NOT EDIT GENERATED FILE.
 
 library cached_patches;
 
 var cached_patches = {
@@ skipping 2626 matching lines @@
 }
 patch class RelatedEvent {
   static Type get instanceRuntimeType => RelatedEventImpl;
 
 }
 class RelatedEventImpl extends RelatedEvent implements js_library.JSObjectInterfacesDom {
   RelatedEventImpl.internal_() : super.internal_();
   get runtimeType => RelatedEvent;
   toString() => super.toString();
 }
-patch class ResourceProgressEvent {
-  static Type get instanceRuntimeType => ResourceProgressEventImpl;
-
-}
-class ResourceProgressEventImpl extends ResourceProgressEvent implements js_library.JSObjectInterfacesDom {
-  ResourceProgressEventImpl.internal_() : super.internal_();
-  get runtimeType => ResourceProgressEvent;
-  toString() => super.toString();
-}
 patch class RtcDataChannel {
   static Type get instanceRuntimeType => RtcDataChannelImpl;
 
 }
 class RtcDataChannelImpl extends RtcDataChannel implements js_library.JSObjectInterfacesDom {
   RtcDataChannelImpl.internal_() : super.internal_();
   get runtimeType => RtcDataChannel;
   toString() => super.toString();
 }
 patch class RtcDataChannelEvent {
@@ skipping 1285 matching lines @@
 }
 patch class _Request {
   static Type get instanceRuntimeType => _RequestImpl;
 
 }
 class _RequestImpl extends _Request implements js_library.JSObjectInterfacesDom {
   _RequestImpl.internal_() : super.internal_();
   get runtimeType => _Request;
   toString() => super.toString();
 }
+patch class _ResourceProgressEvent {
+  static Type get instanceRuntimeType => _ResourceProgressEventImpl;
+
+}
+class _ResourceProgressEventImpl extends _ResourceProgressEvent implements js_library.JSObjectInterfacesDom {
+  _ResourceProgressEventImpl.internal_() : super.internal_();
+  get runtimeType => _ResourceProgressEvent;
+  toString() => super.toString();
+}
 patch class _Response {
   static Type get instanceRuntimeType => _ResponseImpl;
 
 }
 class _ResponseImpl extends _Response implements js_library.JSObjectInterfacesDom {
   _ResponseImpl.internal_() : super.internal_();
   get runtimeType => _Response;
   toString() => super.toString();
 }
 patch class _ServiceWorker {
@@ skipping 2051 matching lines @@
 class WaveShaperNodeImpl extends WaveShaperNode implements js_library.JSObjectInterfacesDom {
   WaveShaperNodeImpl.internal_() : super.internal_();
   get runtimeType => WaveShaperNode;
   toString() => super.toString();
 }
 
 """],
 
 };
 // END_OF_CACHED_PATCHES