Change WebGL API arg nullable behavior.

third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.idl

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 454 matching lines @@
     const GLenum UNPACK_FLIP_Y_WEBGL                = 0x9240;
     const GLenum UNPACK_PREMULTIPLY_ALPHA_WEBGL     = 0x9241;
     const GLenum CONTEXT_LOST_WEBGL                 = 0x9242;
     const GLenum UNPACK_COLORSPACE_CONVERSION_WEBGL = 0x9243;
     const GLenum BROWSER_DEFAULT_WEBGL              = 0x9244;
 
     readonly attribute GLsizei drawingBufferWidth;
     readonly attribute GLsizei drawingBufferHeight;
 
     void activeTexture(GLenum texture);
-    void attachShader(WebGLProgram? program, WebGLShader? shader);
-    void bindAttribLocation(WebGLProgram? program, GLuint index, DOMString name);
+    void attachShader(WebGLProgram program, WebGLShader shader);
+    void bindAttribLocation(WebGLProgram program, GLuint index, DOMString name);
     void bindBuffer(GLenum target, WebGLBuffer? buffer);
     void bindFramebuffer(GLenum target, WebGLFramebuffer? framebuffer);
     void bindRenderbuffer(GLenum target, WebGLRenderbuffer? renderbuffer);
     void bindTexture(GLenum target, WebGLTexture? texture);
     void blendColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
     void blendEquation(GLenum mode);
     void blendEquationSeparate(GLenum modeRGB, GLenum modeAlpha);
     void blendFunc(GLenum sfactor, GLenum dfactor);
     void blendFuncSeparate(GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha);
     // FIXME: should be union type
     // https://www.khronos.org/bugzilla/show_bug.cgi?id=1172
     void bufferData(GLenum target, GLsizeiptr size, GLenum usage);
     void bufferData(GLenum target, ArrayBufferView data, GLenum usage);
     void bufferData(GLenum target, ArrayBuffer? data, GLenum usage);
     void bufferSubData(GLenum target, GLintptr offset, [FlexibleArrayBufferView] ArrayBufferView data);
-    void bufferSubData(GLenum target, GLintptr offset, ArrayBuffer? data);
+    void bufferSubData(GLenum target, GLintptr offset, ArrayBuffer data);
 
     GLenum checkFramebufferStatus(GLenum target);
     void clear(GLbitfield mask);
     void clearColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
     void clearDepth(GLclampf depth);
     void clearStencil(GLint s);
     void colorMask(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
-    void compileShader(WebGLShader? shader);
+    void compileShader(WebGLShader shader);
 
     void compressedTexImage2D(GLenum target, GLint level, GLenum internalformat,
                               GLsizei width, GLsizei height, GLint border, ArrayBufferView data);
     void compressedTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset,
                                  GLsizei width, GLsizei height, GLenum format, ArrayBufferView data);
 
     void copyTexImage2D(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
     void copyTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height);
 
     WebGLBuffer createBuffer();
     WebGLFramebuffer createFramebuffer();
     WebGLProgram createProgram();
     WebGLRenderbuffer createRenderbuffer();
     WebGLShader createShader(GLenum type);
     WebGLTexture createTexture();
 
     void cullFace(GLenum mode);
 
     void deleteBuffer(WebGLBuffer? buffer);
     void deleteFramebuffer(WebGLFramebuffer? framebuffer);
     void deleteProgram(WebGLProgram? program);
     void deleteRenderbuffer(WebGLRenderbuffer? renderbuffer);
     void deleteShader(WebGLShader? shader);
     void deleteTexture(WebGLTexture? texture);
 
     void depthFunc(GLenum func);
     void depthMask(GLboolean flag);
     void depthRange(GLclampf zNear, GLclampf zFar);
-    void detachShader(WebGLProgram? program, WebGLShader? shader);
+    void detachShader(WebGLProgram program, WebGLShader shader);
     void disable(GLenum cap);
     void disableVertexAttribArray(GLuint index);
     void drawArrays(GLenum mode, GLint first, GLsizei count);
     void drawElements(GLenum mode, GLsizei count, GLenum type, GLintptr offset);
 
     void enable(GLenum cap);
     void enableVertexAttribArray(GLuint index);
     void finish();
     void flush();
     void framebufferRenderbuffer(GLenum target, GLenum attachment, GLenum renderbuffertarget, WebGLRenderbuffer? renderbuffer);
     void framebufferTexture2D(GLenum target, GLenum attachment, GLenum textarget, WebGLTexture? texture, GLint level);
     void frontFace(GLenum mode);
     void generateMipmap(GLenum target);
 
-    WebGLActiveInfo getActiveAttrib(WebGLProgram? program, GLuint index);
-    WebGLActiveInfo getActiveUniform(WebGLProgram? program, GLuint index);
+    WebGLActiveInfo getActiveAttrib(WebGLProgram program, GLuint index);
+    WebGLActiveInfo getActiveUniform(WebGLProgram program, GLuint index);
 
-    sequence<WebGLShader>? getAttachedShaders(WebGLProgram? program);
+    sequence<WebGLShader>? getAttachedShaders(WebGLProgram program);
 
-    GLint getAttribLocation(WebGLProgram? program, DOMString name);
+    GLint getAttribLocation(WebGLProgram program, DOMString name);
 
     [CallWith=ScriptState] any getBufferParameter(GLenum target, GLenum pname);
 
     WebGLContextAttributes? getContextAttributes();
 
     GLenum getError();
 
     [CallWith=ScriptState] object? getExtension(DOMString name);
 
     [CallWith=ScriptState] any getFramebufferAttachmentParameter(GLenum target, GLenum attachment, GLenum pname);
     [CallWith=ScriptState] any getParameter(GLenum pname);
-    [CallWith=ScriptState] any getProgramParameter(WebGLProgram? program, GLenum pname);
-    DOMString? getProgramInfoLog(WebGLProgram? program);
+    [CallWith=ScriptState] any getProgramParameter(WebGLProgram program, GLenum pname);
+    DOMString? getProgramInfoLog(WebGLProgram program);
     [CallWith=ScriptState] any getRenderbufferParameter(GLenum target, GLenum pname);
-    [CallWith=ScriptState] any getShaderParameter(WebGLShader? shader, GLenum pname);
+    [CallWith=ScriptState] any getShaderParameter(WebGLShader shader, GLenum pname);
 
-    DOMString?   getShaderInfoLog(WebGLShader? shader);
+    DOMString?   getShaderInfoLog(WebGLShader shader);
 
     WebGLShaderPrecisionFormat getShaderPrecisionFormat(GLenum shadertype, GLenum precisiontype);
 
-    DOMString?   getShaderSource(WebGLShader? shader);
+    DOMString?   getShaderSource(WebGLShader shader);
 
     sequence<DOMString>? getSupportedExtensions();
 
     [CallWith=ScriptState] any getTexParameter(GLenum target, GLenum pname);
 
-    [CallWith=ScriptState] any getUniform(WebGLProgram? program, WebGLUniformLocation? location);
+    [CallWith=ScriptState] any getUniform(WebGLProgram program, WebGLUniformLocation location);
 
-    WebGLUniformLocation getUniformLocation(WebGLProgram? program, DOMString name);
+    WebGLUniformLocation getUniformLocation(WebGLProgram program, DOMString name);
 
     [CallWith=ScriptState] any getVertexAttrib(GLuint index, GLenum pname);
 
     GLintptr getVertexAttribOffset(GLuint index, GLenum pname);
 
     void hint(GLenum target, GLenum mode);
     GLboolean isBuffer(WebGLBuffer? buffer);
     GLboolean isContextLost();
     GLboolean isEnabled(GLenum cap);
     GLboolean isFramebuffer(WebGLFramebuffer? framebuffer);
     GLboolean isProgram(WebGLProgram? program);
     GLboolean isRenderbuffer(WebGLRenderbuffer? renderbuffer);
     GLboolean isShader(WebGLShader? shader);
     GLboolean isTexture(WebGLTexture? texture);
     void lineWidth(GLfloat width);
-    void linkProgram(WebGLProgram? program);
+    void linkProgram(WebGLProgram program);
     void pixelStorei(GLenum pname, GLint param);
     void polygonOffset(GLfloat factor, GLfloat units);
 
     void readPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, ArrayBufferView? pixels);
 
     void renderbufferStorage(GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
     void sampleCoverage(GLclampf value, GLboolean invert);
     void scissor(GLint x, GLint y, GLsizei width, GLsizei height);
-    void shaderSource(WebGLShader? shader, DOMString string);
+    void shaderSource(WebGLShader shader, DOMString string);
     void stencilFunc(GLenum func, GLint ref, GLuint mask);
     void stencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask);
     void stencilMask(GLuint mask);
     void stencilMaskSeparate(GLenum face, GLuint mask);
     void stencilOp(GLenum fail, GLenum zfail, GLenum zpass);
     void stencilOpSeparate(GLenum face, GLenum fail, GLenum zfail, GLenum zpass);
 
     void texParameterf(GLenum target, GLenum pname, GLfloat param);
     void texParameteri(GLenum target, GLenum pname, GLint param);
 
     // Supported forms:
     // FIXME: should be union type
     // https://www.khronos.org/bugzilla/show_bug.cgi?id=1172
     void texImage2D(
         GLenum target, GLint level, GLint internalformat,
         GLsizei width, GLsizei height, GLint border,
         GLenum format, GLenum type, ArrayBufferView? pixels);
     void texImage2D(
         GLenum target, GLint level, GLint internalformat,
-        GLenum format, GLenum type, ImageData? pixels);
+        GLenum format, GLenum type, ImageData pixels);
     [RaisesException] void texImage2D(
         GLenum target, GLint level, GLint internalformat,
         GLenum format, GLenum type, HTMLImageElement image);
     [RaisesException] void texImage2D(
         GLenum target, GLint level, GLint internalformat,
         GLenum format, GLenum type, HTMLCanvasElement canvas);
     [RaisesException] void texImage2D(
         GLenum target, GLint level, GLint internalformat,
         GLenum format, GLenum type, HTMLVideoElement video);
     [RaisesException] void texImage2D(
         GLenum target, GLint level, GLint internalformat,
         GLenum format, GLenum type, ImageBitmap bitmap);
 
     void texSubImage2D(
         GLenum target, GLint level, GLint xoffset, GLint yoffset,
         GLsizei width, GLsizei height,
         GLenum format, GLenum type, ArrayBufferView? pixels);
     void texSubImage2D(
         GLenum target, GLint level, GLint xoffset, GLint yoffset,
-        GLenum format, GLenum type, ImageData? pixels);
+        GLenum format, GLenum type, ImageData pixels);
     [RaisesException] void texSubImage2D(
         GLenum target, GLint level, GLint xoffset, GLint yoffset,
         GLenum format, GLenum type, HTMLImageElement image);
     [RaisesException] void texSubImage2D(
         GLenum target, GLint level, GLint xoffset, GLint yoffset,
         GLenum format, GLenum type, HTMLCanvasElement canvas);
     [RaisesException] void texSubImage2D(
         GLenum target, GLint level, GLint xoffset, GLint yoffset,
         GLenum format, GLenum type, HTMLVideoElement video);
     [RaisesException] void texSubImage2D(
@@ skipping 26 matching lines @@
     void uniform4iv(WebGLUniformLocation? location, sequence<GLint> v);
 
     void uniformMatrix2fv(WebGLUniformLocation? location, GLboolean transpose, Float32Array array);
     void uniformMatrix2fv(WebGLUniformLocation? location, GLboolean transpose, sequence<GLfloat> array);
     void uniformMatrix3fv(WebGLUniformLocation? location, GLboolean transpose, Float32Array array);
     void uniformMatrix3fv(WebGLUniformLocation? location, GLboolean transpose, sequence<GLfloat> array);
     void uniformMatrix4fv(WebGLUniformLocation? location, GLboolean transpose, Float32Array array);
     void uniformMatrix4fv(WebGLUniformLocation? location, GLboolean transpose, sequence<GLfloat> array);
 
     void useProgram(WebGLProgram? program);
-    void validateProgram(WebGLProgram? program);
+    void validateProgram(WebGLProgram program);
 
     void vertexAttrib1f(GLuint indx, GLfloat x);
     void vertexAttrib1fv(GLuint indx, Float32Array values);
     void vertexAttrib1fv(GLuint indx, sequence<GLfloat> values);
     void vertexAttrib2f(GLuint indx, GLfloat x, GLfloat y);
     void vertexAttrib2fv(GLuint indx, Float32Array values);
     void vertexAttrib2fv(GLuint indx, sequence<GLfloat> values);
     void vertexAttrib3f(GLuint indx, GLfloat x, GLfloat y, GLfloat z);
     void vertexAttrib3fv(GLuint indx, Float32Array values);
     void vertexAttrib3fv(GLuint indx, sequence<GLfloat> values);
     void vertexAttrib4f(GLuint indx, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
     void vertexAttrib4fv(GLuint indx, Float32Array values);
     void vertexAttrib4fv(GLuint indx, sequence<GLfloat> values);
     void vertexAttribPointer(GLuint indx, GLint size, GLenum type, GLboolean normalized,
                                                     GLsizei stride, GLintptr offset);
 
     void viewport(GLint x, GLint y, GLsizei width, GLsizei height);
 
     [RuntimeEnabled=ExperimentalCanvasFeatures, CallWith=ScriptState, RaisesException] void commit();
 };