Revert "Making all DOM types abstract and removing superfluous Dartium constructors."

sdk/lib/indexed_db/dart2js/indexed_db_dart2js.dart

Index: sdk/lib/indexed_db/dart2js/indexed_db_dart2js.dart
diff --git a/sdk/lib/indexed_db/dart2js/indexed_db_dart2js.dart b/sdk/lib/indexed_db/dart2js/indexed_db_dart2js.dart
index 1961500969fe1aaadcb76e4f88953bc9e3d5cf8b..9dd0d9a6f6a4810a54abfb6379801cd2095a1dc7 100644
--- a/sdk/lib/indexed_db/dart2js/indexed_db_dart2js.dart
+++ b/sdk/lib/indexed_db/dart2js/indexed_db_dart2js.dart
@@ -158,9 +158,7 @@ class Cursor native "IDBCursor" {
     }
   }
 
-    // To suppress missing implicit constructor warnings.
-  factory Cursor._() { throw new UnsupportedError("Not supported"); }
-
+  
   @DomName('IDBCursor.direction')
   @DocsEditable
   final String direction;
@@ -218,8 +216,6 @@ class Cursor native "IDBCursor" {
 @DomName('IDBCursorWithValue')
 @Unstable
 class CursorWithValue extends Cursor native "IDBCursorWithValue" {
-  // To suppress missing implicit constructor warnings.
-  factory CursorWithValue._() { throw new UnsupportedError("Not supported"); }
 
   dynamic get value => _convertNativeToDart_IDBAny(this._get_value);
   @JSName('value')
@@ -274,8 +270,6 @@ class Database extends EventTarget native "IDBDatabase" {
   @JSName('transaction')
   Transaction _transaction(stores, mode) native;
 
-  // To suppress missing implicit constructor warnings.
-  factory Database._() { throw new UnsupportedError("Not supported"); }
 
   @DomName('IDBDatabase.abortEvent')
   @DocsEditable
@@ -450,8 +444,6 @@ class IdbFactory native "IDBFactory" {
         '!!(#.getDatabaseNames || #.webkitGetDatabaseNames)', this, this);
   }
 
-  // To suppress missing implicit constructor warnings.
-  factory IdbFactory._() { throw new UnsupportedError("Not supported"); }
 
   @DomName('IDBFactory.cmp')
   @DocsEditable
@@ -599,9 +591,7 @@ class Index native "IDBIndex" {
     return ObjectStore._cursorStreamFromResult(request, autoAdvance);
   }
 
-    // To suppress missing implicit constructor warnings.
-  factory Index._() { throw new UnsupportedError("Not supported"); }
-
+  
   @DomName('IDBIndex.keyPath')
   @DocsEditable
   @annotation_Creates_SerializedScriptValue
@@ -688,8 +678,6 @@ class KeyRange native "IDBKeyRange" {
       _KeyRangeFactoryProvider.createKeyRange_bound(
           lower, upper, lowerOpen, upperOpen);
 
-  // To suppress missing implicit constructor warnings.
-  factory KeyRange._() { throw new UnsupportedError("Not supported"); }
 
   @DomName('IDBKeyRange.lower')
   @DocsEditable
@@ -870,8 +858,6 @@ class ObjectStore native "IDBObjectStore" {
     return $dom_createIndex(name, keyPath, options);
   }
 
-  // To suppress missing implicit constructor warnings.
-  factory ObjectStore._() { throw new UnsupportedError("Not supported"); }
 
   @DomName('IDBObjectStore.autoIncrement')
   @DocsEditable
@@ -1070,8 +1056,6 @@ class ObjectStore native "IDBObjectStore" {
 @DomName('IDBOpenDBRequest')
 @Unstable
 class OpenDBRequest extends Request implements EventTarget native "IDBOpenDBRequest" {
-  // To suppress missing implicit constructor warnings.
-  factory OpenDBRequest._() { throw new UnsupportedError("Not supported"); }
 
   @DomName('IDBOpenDBRequest.blockedEvent')
   @DocsEditable
@@ -1098,8 +1082,6 @@ class OpenDBRequest extends Request implements EventTarget native "IDBOpenDBRequ
 @DomName('IDBRequest')
 @Unstable
 class Request extends EventTarget native "IDBRequest" {
-  // To suppress missing implicit constructor warnings.
-  factory Request._() { throw new UnsupportedError("Not supported"); }
 
   @DomName('IDBRequest.errorEvent')
   @DocsEditable
@@ -1197,8 +1179,6 @@ class Transaction extends EventTarget native "IDBTransaction" {
     return completer.future;
   }
 
-  // To suppress missing implicit constructor warnings.
-  factory Transaction._() { throw new UnsupportedError("Not supported"); }
 
   @DomName('IDBTransaction.abortEvent')
   @DocsEditable
@@ -1276,8 +1256,6 @@ class Transaction extends EventTarget native "IDBTransaction" {
 @DomName('IDBVersionChangeEvent')
 @Unstable
 class VersionChangeEvent extends Event native "IDBVersionChangeEvent" {
-  // To suppress missing implicit constructor warnings.
-  factory VersionChangeEvent._() { throw new UnsupportedError("Not supported"); }
 
   @DomName('IDBVersionChangeEvent.newVersion')
   @DocsEditable
@@ -1300,6 +1278,4 @@ class VersionChangeEvent extends Event native "IDBVersionChangeEvent" {
 @DomName('IDBAny')
 @deprecated // nonstandard
 abstract class _IDBAny native "IDBAny" {
-  // To suppress missing implicit constructor warnings.
-  factory _IDBAny._() { throw new UnsupportedError("Not supported"); }
 }