Merging dart:html interfaces and implementations

lib/html/src/dartium_FactoryProviders.dart

 // Copyright (c) 2012, 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.
 
 class _AudioContextFactoryProvider {
   static AudioContext createAudioContext() => _createAudioContext();
   static _createAudioContext([int numberOfChannels,
                               int numberOfFrames,
                               int sampleRate])
       native "AudioContext_constructor_Callback";
 }
 
 class _IDBKeyRangeFactoryProvider {
 
   static IDBKeyRange createIDBKeyRange_only(/*IDBKey*/ value) =>
-      _IDBKeyRangeImpl.only_(value);
+      IDBKeyRange.only_(value);
 
   static IDBKeyRange createIDBKeyRange_lowerBound(
       /*IDBKey*/ bound, [bool open = false]) =>
-      _IDBKeyRangeImpl.lowerBound_(bound, open);
+      IDBKeyRange.lowerBound_(bound, open);
 
   static IDBKeyRange createIDBKeyRange_upperBound(
       /*IDBKey*/ bound, [bool open = false]) =>
-      _IDBKeyRangeImpl.upperBound_(bound, open);
+      IDBKeyRange.upperBound_(bound, open);
 
   static IDBKeyRange createIDBKeyRange_bound(
       /*IDBKey*/ lower, /*IDBKey*/ upper,
       [bool lowerOpen = false, bool upperOpen = false]) =>
-      _IDBKeyRangeImpl.bound_(lower, upper, lowerOpen, upperOpen);
+      IDBKeyRange.bound_(lower, upper, lowerOpen, upperOpen);
 }
 
 class _TypedArrayFactoryProvider {
   static Float32Array createFloat32Array(int length) => _F32(length);
   static Float32Array createFloat32Array_fromList(List<num> list) =>
       _F32(ensureNative(list));
   static Float32Array createFloat32Array_fromBuffer(ArrayBuffer buffer,
       [int byteOffset = 0, int length]) => _F32(buffer, byteOffset, length);
   static _F32(arg0, [arg1, arg2]) native "Float32Array_constructor_Callback";
 
@@ skipping 61 matching lines @@
   static Point createPoint(num x, num y) => _createWebKitPoint(x, y);
   static _createWebKitPoint(num x, num y) native "WebKitPoint_constructor_Callback";
 }
 
 class _WebSocketFactoryProvider {
   static WebSocket createWebSocket(String url) => _createWebSocket(url);
   static _createWebSocket(String url) native "WebSocket_constructor_Callback";
 }
 
 class _TextFactoryProvider {
-  static Text createText(String data) => _document.$dom_createTextNode(data);
+  static Text createText(String data) => document.$dom_createTextNode(data);
 }