Expand overloaded methods and optional parameters in the html library.

sdk/lib/html/dartium/html_dartium.dart

Index: sdk/lib/html/dartium/html_dartium.dart
diff --git a/sdk/lib/html/dartium/html_dartium.dart b/sdk/lib/html/dartium/html_dartium.dart
index e7681fea5018b590d01caab725aea63a8a0d9693..1297006e1d528a3a9e87b994b9da7600db87e634 100644
--- a/sdk/lib/html/dartium/html_dartium.dart
+++ b/sdk/lib/html/dartium/html_dartium.dart
@@ -1436,19 +1436,13 @@ class CanvasRenderingContext2D extends CanvasRenderingContext {
   @DocsEditable
   CanvasGradient createLinearGradient(num x0, num y0, num x1, num y1) native "CanvasRenderingContext2D_createLinearGradient_Callback";
 
-  CanvasPattern createPattern(canvas_OR_image, String repetitionType) {
-    if ((repetitionType is String || repetitionType == null) && (canvas_OR_image is CanvasElement || canvas_OR_image == null)) {
-      return _createPattern_1(canvas_OR_image, repetitionType);
-    }
-    if ((repetitionType is String || repetitionType == null) && (canvas_OR_image is ImageElement || canvas_OR_image == null)) {
-      return _createPattern_2(canvas_OR_image, repetitionType);
-    }
-    throw new ArgumentError("Incorrect number or type of arguments");
-  }
-
-  CanvasPattern _createPattern_1(canvas_OR_image, repetitionType) native "CanvasRenderingContext2D__createPattern_1_Callback";
+  @DomName('CanvasRenderingContext2D.createPattern')
+  @DocsEditable
+  CanvasPattern createPattern(CanvasElement canvas, String repetitionType) native "CanvasRenderingContext2D_createPattern_Callback";
 
-  CanvasPattern _createPattern_2(canvas_OR_image, repetitionType) native "CanvasRenderingContext2D__createPattern_2_Callback";
+  @DomName('CanvasRenderingContext2D.createPatternFromImage')
+  @DocsEditable
+  CanvasPattern createPatternFromImage(ImageElement image, String repetitionType) native "CanvasRenderingContext2D_createPatternFromImage_Callback";
 
   @DomName('CanvasRenderingContext2D.createRadialGradient')
   @DocsEditable
@@ -6806,21 +6800,13 @@ class DataTransferItemList extends NativeFieldWrapperClass1 {
   @DocsEditable
   int get length native "DataTransferItemList_length_Getter";
 
-  void add(data_OR_file, [String type]) {
-    if ((data_OR_file is File || data_OR_file == null) && type == null) {
-      _add_1(data_OR_file);
-      return;
-    }
-    if ((type is String || type == null) && (data_OR_file is String || data_OR_file == null)) {
-      _add_2(data_OR_file, type);
-      return;
-    }
-    throw new ArgumentError("Incorrect number or type of arguments");
-  }
-
-  void _add_1(data_OR_file) native "DataTransferItemList__add_1_Callback";
+  @DomName('DataTransferItemList.add')
+  @DocsEditable
+  void add(String data, String type) native "DataTransferItemList_add_Callback";
 
-  void _add_2(data_OR_file, type) native "DataTransferItemList__add_2_Callback";
+  @DomName('DataTransferItemList.addFile')
+  @DocsEditable
+  void addFile(File file) native "DataTransferItemList_addFile_Callback";
 
   @DomName('DataTransferItemList.clear')
   @DocsEditable
@@ -17317,7 +17303,7 @@ class Navigator extends NativeFieldWrapperClass1 {
    *     window.navigator.getUserMedia(audio: true, video: true).then((stream) {
    *       var video = new VideoElement()
    *         ..autoplay = true
-   *         ..src = Url.createObjectUrl(stream);
+   *         ..src = Url.createObjectUrlFromStream(stream);
    *       document.body.append(video);
    *     });
    *
@@ -19941,33 +19927,21 @@ class RtcDataChannel extends EventTarget {
   @DocsEditable
   void $dom_removeEventListener(String type, EventListener listener, [bool useCapture]) native "RTCDataChannel_removeEventListener_Callback";
 
-  void send(data) {
-    if ((data is TypedData || data == null)) {
-      _send_1(data);
-      return;
-    }
-    if ((data is ByteBuffer || data == null)) {
-      _send_2(data);
-      return;
-    }
-    if ((data is Blob || data == null)) {
-      _send_3(data);
-      return;
-    }
-    if ((data is String || data == null)) {
-      _send_4(data);
-      return;
-    }
-    throw new ArgumentError("Incorrect number or type of arguments");
-  }
-
-  void _send_1(data) native "RTCDataChannel__send_1_Callback";
+  @DomName('RTCDataChannel.send')
+  @DocsEditable
+  void send(String data) native "RTCDataChannel_send_Callback";
 
-  void _send_2(data) native "RTCDataChannel__send_2_Callback";
+  @DomName('RTCDataChannel.sendBlob')
+  @DocsEditable
+  void sendBlob(Blob data) native "RTCDataChannel_sendBlob_Callback";
 
-  void _send_3(data) native "RTCDataChannel__send_3_Callback";
+  @DomName('RTCDataChannel.sendByteBuffer')
+  @DocsEditable
+  void sendByteBuffer(ByteBuffer data) native "RTCDataChannel_sendByteBuffer_Callback";
 
-  void _send_4(data) native "RTCDataChannel__send_4_Callback";
+  @DomName('RTCDataChannel.sendTypedData')
+  @DocsEditable
+  void sendTypedData(TypedData data) native "RTCDataChannel_sendTypedData_Callback";
 
   @DomName('RTCDataChannel.onclose')
   @DocsEditable
@@ -23143,7 +23117,7 @@ class TextAreaElement extends _Element_Merged {
   @DocsEditable
   void setCustomValidity(String error) native "HTMLTextAreaElement_setCustomValidity_Callback";
 
-  void setRangeText(String replacement, [int start, int end, String selectionMode]) {
+  void setRangeText(String replacement, {int start, int end, String selectionMode}) {
     if ((replacement is String || replacement == null) && start == null && end == null && selectionMode == null) {
       _setRangeText_1(replacement);
       return;
@@ -24236,24 +24210,17 @@ class UnknownElement extends _Element_Merged {
 class Url extends NativeFieldWrapperClass1 {
   Url.internal();
 
-  static String createObjectUrl(blob_OR_source_OR_stream) {
-    if ((blob_OR_source_OR_stream is MediaSource || blob_OR_source_OR_stream == null)) {
-      return _createObjectURL_1(blob_OR_source_OR_stream);
-    }
-    if ((blob_OR_source_OR_stream is MediaStream || blob_OR_source_OR_stream == null)) {
-      return _createObjectURL_2(blob_OR_source_OR_stream);
-    }
-    if ((blob_OR_source_OR_stream is Blob || blob_OR_source_OR_stream == null)) {
-      return _createObjectURL_3(blob_OR_source_OR_stream);
-    }
-    throw new ArgumentError("Incorrect number or type of arguments");
-  }
-
-  static String _createObjectURL_1(blob_OR_source_OR_stream) native "URL__createObjectURL_1_Callback";
+  @DomName('URL.createObjectURL')
+  @DocsEditable
+  static String createObjectUrl(MediaSource source) native "URL_createObjectURL_Callback";
 
-  static String _createObjectURL_2(blob_OR_source_OR_stream) native "URL__createObjectURL_2_Callback";
+  @DomName('URL.createObjectUrlFromBlob')
+  @DocsEditable
+  static String createObjectUrlFromBlob(Blob blob) native "URL_createObjectUrlFromBlob_Callback";
 
-  static String _createObjectURL_3(blob_OR_source_OR_stream) native "URL__createObjectURL_3_Callback";
+  @DomName('URL.createObjectUrlFromStream')
+  @DocsEditable
+  static String createObjectUrlFromStream(MediaStream stream) native "URL_createObjectUrlFromStream_Callback";
 
   @DomName('URL.revokeObjectURL')
   @DocsEditable