Regenerate dart:html from new Blink IDL files

sdk/lib/indexed_db/dartium/indexed_db_dartium.dart

Index: sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
diff --git a/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart b/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
index e48be2a4ccb9a33508402d082d75cb166531cab2..015c8ee930fb81c89849f3b82a6879e20839f3b5 100644
--- a/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
+++ b/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
@@ -980,13 +980,6 @@ class Request extends EventTarget {
   @DocsEditable()
   Transaction get transaction native "IDBRequest_transaction_Getter";
 
-  @DomName('IDBRequest.webkitErrorMessage')
-  @DocsEditable()
-  @SupportedBrowser(SupportedBrowser.CHROME)
-  @SupportedBrowser(SupportedBrowser.SAFARI)
-  @Experimental()
-  String get errorMessage native "IDBRequest_webkitErrorMessage_Getter";
-
   @DomName('IDBRequest.addEventListener')
   @DocsEditable()
   void $dom_addEventListener(String type, EventListener listener, [bool useCapture]) native "IDBRequest_addEventListener_Callback";
@@ -1069,13 +1062,6 @@ class Transaction extends EventTarget {
   @DocsEditable()
   String get mode native "IDBTransaction_mode_Getter";
 
-  @DomName('IDBTransaction.webkitErrorMessage')
-  @DocsEditable()
-  @SupportedBrowser(SupportedBrowser.CHROME)
-  @SupportedBrowser(SupportedBrowser.SAFARI)
-  @Experimental()
-  String get errorMessage native "IDBTransaction_webkitErrorMessage_Getter";
-
   @DomName('IDBTransaction.abort')
   @DocsEditable()
   void abort() native "IDBTransaction_abort_Callback";
@@ -1123,6 +1109,11 @@ class VersionChangeEvent extends Event {
   // To suppress missing implicit constructor warnings.
   factory VersionChangeEvent._() { throw new UnsupportedError("Not supported"); }
 
+  @DomName('IDBVersionChangeEvent.dataLoss')
+  @DocsEditable()
+  @Experimental() // untriaged
+  String get dataLoss native "IDBVersionChangeEvent_dataLoss_Getter";
+
   @DomName('IDBVersionChangeEvent.newVersion')
   @DocsEditable()
   dynamic get newVersion native "IDBVersionChangeEvent_newVersion_Getter";