Moved most of html lib generating scripts into tools.

tools/dom/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.
 
 part of html;
 
 class _TypedArrayFactoryProvider {
   static Float32Array createFloat32Array(int length) => _F32(length);
   static Float32Array createFloat32Array_fromList(List<num> list) =>
       _F32(ensureNative(list));
@@ skipping 57 matching lines @@
       ArrayBuffer buffer, [int byteOffset = 0, int length]) =>
       _U8C(buffer, byteOffset, length);
   static _U8C(arg0, [arg1, arg2]) native "Uint8ClampedArray_constructor_Callback";
 
   static ensureNative(List list) => list;  // TODO: make sure.
 }
 
 class _TextFactoryProvider {
   static Text createText(String data) => document.$dom_createTextNode(data);
 }