Remove more question marks.

sdk/lib/web_gl/dart2js/web_gl_dart2js.dart

Index: sdk/lib/web_gl/dart2js/web_gl_dart2js.dart
diff --git a/sdk/lib/web_gl/dart2js/web_gl_dart2js.dart b/sdk/lib/web_gl/dart2js/web_gl_dart2js.dart
index ae64061a5315222c4ee09219f2116ff40c038f95..eab87432a9b5393dd26f6d34de628703bcc9029d 100644
--- a/sdk/lib/web_gl/dart2js/web_gl_dart2js.dart
+++ b/sdk/lib/web_gl/dart2js/web_gl_dart2js.dart
@@ -2439,24 +2439,24 @@ class RenderingContext extends CanvasRenderingContext native "WebGLRenderingCont
   @DomName('WebGLRenderingContext.texImage2D')
   @DocsEditable
   void texImage2D(int target, int level, int internalformat, int format_OR_width, int height_OR_type, border_OR_canvas_OR_image_OR_pixels_OR_video, [int format, int type, TypedData pixels]) {
-    if ((border_OR_canvas_OR_image_OR_pixels_OR_video is int || border_OR_canvas_OR_image_OR_pixels_OR_video == null) && ?format && ?type && ?pixels) {
+    if (pixels != null && type != null && format != null && (border_OR_canvas_OR_image_OR_pixels_OR_video is int || border_OR_canvas_OR_image_OR_pixels_OR_video == null)) {
       _texImage2D_1(target, level, internalformat, format_OR_width, height_OR_type, border_OR_canvas_OR_image_OR_pixels_OR_video, format, type, pixels);
       return;
     }
-    if ((border_OR_canvas_OR_image_OR_pixels_OR_video is ImageData || border_OR_canvas_OR_image_OR_pixels_OR_video == null) && !?format && !?type && !?pixels) {
+    if ((border_OR_canvas_OR_image_OR_pixels_OR_video is ImageData || border_OR_canvas_OR_image_OR_pixels_OR_video == null) && format == null && type == null && pixels == null) {
       var pixels_1 = _convertDartToNative_ImageData(border_OR_canvas_OR_image_OR_pixels_OR_video);
       _texImage2D_2(target, level, internalformat, format_OR_width, height_OR_type, pixels_1);
       return;
     }
-    if ((border_OR_canvas_OR_image_OR_pixels_OR_video is ImageElement || border_OR_canvas_OR_image_OR_pixels_OR_video == null) && !?format && !?type && !?pixels) {
+    if ((border_OR_canvas_OR_image_OR_pixels_OR_video is ImageElement || border_OR_canvas_OR_image_OR_pixels_OR_video == null) && format == null && type == null && pixels == null) {
       _texImage2D_3(target, level, internalformat, format_OR_width, height_OR_type, border_OR_canvas_OR_image_OR_pixels_OR_video);
       return;
     }
-    if ((border_OR_canvas_OR_image_OR_pixels_OR_video is CanvasElement || border_OR_canvas_OR_image_OR_pixels_OR_video == null) && !?format && !?type && !?pixels) {
+    if ((border_OR_canvas_OR_image_OR_pixels_OR_video is CanvasElement || border_OR_canvas_OR_image_OR_pixels_OR_video == null) && format == null && type == null && pixels == null) {
       _texImage2D_4(target, level, internalformat, format_OR_width, height_OR_type, border_OR_canvas_OR_image_OR_pixels_OR_video);
       return;
     }
-    if ((border_OR_canvas_OR_image_OR_pixels_OR_video is VideoElement || border_OR_canvas_OR_image_OR_pixels_OR_video == null) && !?format && !?type && !?pixels) {
+    if ((border_OR_canvas_OR_image_OR_pixels_OR_video is VideoElement || border_OR_canvas_OR_image_OR_pixels_OR_video == null) && format == null && type == null && pixels == null) {
       _texImage2D_5(target, level, internalformat, format_OR_width, height_OR_type, border_OR_canvas_OR_image_OR_pixels_OR_video);
       return;
     }
@@ -2494,24 +2494,24 @@ class RenderingContext extends CanvasRenderingContext native "WebGLRenderingCont
   @DomName('WebGLRenderingContext.texSubImage2D')
   @DocsEditable
   void texSubImage2D(int target, int level, int xoffset, int yoffset, int format_OR_width, int height_OR_type, canvas_OR_format_OR_image_OR_pixels_OR_video, [int type, TypedData pixels]) {
-    if ((canvas_OR_format_OR_image_OR_pixels_OR_video is int || canvas_OR_format_OR_image_OR_pixels_OR_video == null) && ?type && ?pixels) {
+    if (pixels != null && type != null && (canvas_OR_format_OR_image_OR_pixels_OR_video is int || canvas_OR_format_OR_image_OR_pixels_OR_video == null)) {
       _texSubImage2D_1(target, level, xoffset, yoffset, format_OR_width, height_OR_type, canvas_OR_format_OR_image_OR_pixels_OR_video, type, pixels);
       return;
     }
-    if ((canvas_OR_format_OR_image_OR_pixels_OR_video is ImageData || canvas_OR_format_OR_image_OR_pixels_OR_video == null) && !?type && !?pixels) {
+    if ((canvas_OR_format_OR_image_OR_pixels_OR_video is ImageData || canvas_OR_format_OR_image_OR_pixels_OR_video == null) && type == null && pixels == null) {
       var pixels_1 = _convertDartToNative_ImageData(canvas_OR_format_OR_image_OR_pixels_OR_video);
       _texSubImage2D_2(target, level, xoffset, yoffset, format_OR_width, height_OR_type, pixels_1);
       return;
     }
-    if ((canvas_OR_format_OR_image_OR_pixels_OR_video is ImageElement || canvas_OR_format_OR_image_OR_pixels_OR_video == null) && !?type && !?pixels) {
+    if ((canvas_OR_format_OR_image_OR_pixels_OR_video is ImageElement || canvas_OR_format_OR_image_OR_pixels_OR_video == null) && type == null && pixels == null) {
       _texSubImage2D_3(target, level, xoffset, yoffset, format_OR_width, height_OR_type, canvas_OR_format_OR_image_OR_pixels_OR_video);
       return;
     }
-    if ((canvas_OR_format_OR_image_OR_pixels_OR_video is CanvasElement || canvas_OR_format_OR_image_OR_pixels_OR_video == null) && !?type && !?pixels) {
+    if ((canvas_OR_format_OR_image_OR_pixels_OR_video is CanvasElement || canvas_OR_format_OR_image_OR_pixels_OR_video == null) && type == null && pixels == null) {
       _texSubImage2D_4(target, level, xoffset, yoffset, format_OR_width, height_OR_type, canvas_OR_format_OR_image_OR_pixels_OR_video);
       return;
     }
-    if ((canvas_OR_format_OR_image_OR_pixels_OR_video is VideoElement || canvas_OR_format_OR_image_OR_pixels_OR_video == null) && !?type && !?pixels) {
+    if ((canvas_OR_format_OR_image_OR_pixels_OR_video is VideoElement || canvas_OR_format_OR_image_OR_pixels_OR_video == null) && type == null && pixels == null) {
       _texSubImage2D_5(target, level, xoffset, yoffset, format_OR_width, height_OR_type, canvas_OR_format_OR_image_OR_pixels_OR_video);
       return;
     }