- Moved all WebGL rendering/drawing constants to synthesized class WebGL.

- Removed obsolete Dartium/_blink code.

[email protected]

Change-Id: I81a6f0d5bfe33592ff8ae9c85db9266e898c2861
Reviewed-on: https://dart-review.googlesource.com/60380
Commit-Queue: Terry Lucas <[email protected]>
Reviewed-by: Kevin Moore <[email protected]>

Author: terrylucas

sdk/lib/web_gl/dart2js/web_gl_dart2js.dart

@@ -38,10 +38,11 @@ main() {
         var canvas = new CanvasElement();
         var context =
             canvas.getContext('experimental-webgl') as gl.RenderingContext;
-        var shader = context.createShader(gl.VERTEX_SHADER);
+        var shader = context.createShader(gl.WebGL.VERTEX_SHADER);
         context.shaderSource(shader, 'void main() { }');
         context.compileShader(shader);
-        var success = context.getShaderParameter(shader, gl.COMPILE_STATUS);
+        var success =
+            context.getShaderParameter(shader, gl.WebGL.COMPILE_STATUS);
         expect(success, isTrue);
       });