75         var grCtx = this._MakeGrContext();
76         if (!grCtx) {
80         grCtx._context = ctx;
81         var oldDelete = grCtx.delete.bind(grCtx);
84         grCtx['delete'] = function() {  function in CanvasKit.MakeWebGLContext
87         }.bind(grCtx);
89         GL.currentContext.grDirectContext = grCtx;
90         return grCtx;
115       CanvasKit.MakeOnScreenGLSurface = function(grCtx, w, h, colorspace, sc, st) {  argument
116         if (!this.setCurrentContext(grCtx._context)) {
122           surface = this._MakeOnScreenGLSurface(grCtx, w, h, colorspace);
124           surface = this._MakeOnScreenGLSurface(grCtx, w, h, colorspace, sc, st);
129         surface._context = grCtx._context;
134         var grCtx = arguments[0];
135         if (!this.setCurrentContext(grCtx._context)) {
140           surface = this._MakeRenderTargetWH(grCtx, arguments[1], arguments[2]);
145           surface = this._MakeRenderTargetII(grCtx, arguments[1]);
153         surface._context = grCtx._context;