Remove vmservice_patch.dart.

sdk/lib/vmservice/asset.dart

Index: sdk/lib/vmservice/asset.dart
diff --git a/sdk/lib/vmservice/asset.dart b/sdk/lib/vmservice/asset.dart
index 708c169849842aaa0cd711d4190f59c188150bd9..32c8ec2f987da7383e1155dca0327dfb8a7e69bd 100644
--- a/sdk/lib/vmservice/asset.dart
+++ b/sdk/lib/vmservice/asset.dart
@@ -37,12 +37,25 @@ class Asset {
     }
   }
 
-  /// Call to request assets from the embedder.
-  external static HashMap<String, Asset> request();
+  static HashMap<String, Asset> request() {
+    Uint8List tarBytes = _requestAssets();
+    if (tarBytes == null) {
+      return null;
+    }
+    List assetList = _decodeAssets(tarBytes);
+    HashMap<String, Asset> assets = new HashMap<String, Asset>();
+    for (int i = 0; i < assetList.length; i += 2) {
+      var a = new Asset(assetList[i], assetList[i + 1]);
+      assets[a.name] = a;
+    }
+    return assets;
+  }
 
   String toString() => '$name ($mimeType)';
 }
 
+List _decodeAssets(Uint8List data) native "VMService_DecodeAssets";
+
 HashMap<String, Asset> _assets;
 HashMap<String, Asset> get assets {
   if (_assets == null) {