Patches to support Dart VM patch files in dart2js.

runtime/bin/socket_patch.dart

Index: runtime/bin/socket_patch.dart
diff --git a/runtime/bin/socket_patch.dart b/runtime/bin/socket_patch.dart
index 1ec51b77795faff13c3a030cd6c553d4ed713ba3..765152a43bbe99e4afb9d0a141187e9bf8ba207b 100644
--- a/runtime/bin/socket_patch.dart
+++ b/runtime/bin/socket_patch.dart
@@ -320,8 +320,6 @@ class _NativeSocket extends _NativeSocketNativeWrapper with _ServiceObject {
   // a HttpServer, a WebSocket connection, a process pipe, etc.
   Object owner;
 
-  static double get timestamp => sw.elapsedMicroseconds / 1000000.0;
-
   static Future<List<InternetAddress>> lookup(
       String host, {InternetAddressType type: InternetAddressType.ANY}) {
     return _IOService._dispatch(_SOCKET_LOOKUP, [host, type._value])
@@ -387,7 +385,7 @@ class _NativeSocket extends _NativeSocketNativeWrapper with _ServiceObject {
           return lookup(host)
               .then((addresses) {
                 if (addresses.isEmpty) {
-                  throw createError(response, "Failed host lookup: '$host'");
+                  throw createError(null, "Failed host lookup: '$host'");
                 }
                 return addresses;
               });
@@ -477,7 +475,7 @@ class _NativeSocket extends _NativeSocketNativeWrapper with _ServiceObject {
           return lookup(host)
               .then((list) {
                 if (list.length == 0) {
-                  throw createError(response, "Failed host lookup: '$host'");
+                  throw createError(null, "Failed host lookup: '$host'");
                 }
                 return list[0];
               });
@@ -515,7 +513,7 @@ class _NativeSocket extends _NativeSocketNativeWrapper with _ServiceObject {
           return lookup(host)
               .then((list) {
                 if (list.length == 0) {
-                  throw createError(response, "Failed host lookup: '$host'");
+                  throw createError(null, "Failed host lookup: '$host'");
                 }
                 return list[0];
               });
@@ -1709,7 +1707,8 @@ patch class RawDatagramSocket {
   }
 }
 
-class _RawDatagramSocket extends Stream implements RawDatagramSocket {
+class _RawDatagramSocket extends Stream<RawSocketEvent>
+    implements RawDatagramSocket {
   _NativeSocket _socket;
   StreamController<RawSocketEvent> _controller;
   bool _readEventsEnabled = true;