Replacing the 'return 0;' statements with 'return nullptr;'

public/platform/WebGraphicsContext3D.h

 /*
  * Copyright (C) 2012 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 432 matching lines @@
     virtual WebGLId createVertexArrayOES() { return 0; }
     virtual void deleteVertexArrayOES(WebGLId array) { }
     virtual WGC3Dboolean isVertexArrayOES(WebGLId array) { return false; }
     virtual void bindVertexArrayOES(WebGLId array) { }
 
     // GL_CHROMIUM_texture_from_image
     virtual void bindTexImage2DCHROMIUM(WGC3Denum target, WGC3Dint imageId) { }
     virtual void releaseTexImage2DCHROMIUM(WGC3Denum target, WGC3Dint imageId) { }
 
     // GL_CHROMIUM_pixel_transfer_buffer_object
-    virtual void* mapBufferCHROMIUM(WGC3Denum target, WGC3Denum access) { return 0; }
+    virtual void* mapBufferCHROMIUM(WGC3Denum target, WGC3Denum access) { return nullptr; }
     virtual WGC3Dboolean unmapBufferCHROMIUM(WGC3Denum target) { return false; }
 
     // GL_CHROMIUM_async_pixel_transfers
     virtual void asyncTexImage2DCHROMIUM(WGC3Denum target, WGC3Dint level, WGC3Denum internalformat, WGC3Dsizei width, WGC3Dsizei height, WGC3Dint border, WGC3Denum format, WGC3Denum type, const void* pixels) { }
     virtual void asyncTexSubImage2DCHROMIUM(WGC3Denum target, WGC3Dint level, WGC3Dint xoffset, WGC3Dint yoffset, WGC3Dsizei width, WGC3Dsizei height, WGC3Denum format, WGC3Denum type, const void* pixels) { }
     virtual void waitAsyncTexImage2DCHROMIUM(WGC3Denum) { }
 
     // GL_EXT_draw_buffers
     virtual void drawBuffersEXT(WGC3Dsizei n, const WGC3Denum* bufs) { }
 
-    virtual GrGLInterface* createGrGLInterface() { return 0; }
+    virtual GrGLInterface* createGrGLInterface() { return nullptr; }
 
     // GL_CHROMIUM_image
     virtual void destroyImageCHROMIUM(WGC3Duint imageId) { }
 
     // GL_CHROMIUM_gpu_memory_buffer_image
     virtual WGC3Duint createGpuMemoryBufferImageCHROMIUM(WGC3Dsizei width, WGC3Dsizei height, WGC3Denum internalformat, WGC3Denum usage) { return 0; }
 
     // GL_ANGLE_instanced_arrays
     virtual void drawArraysInstancedANGLE(WGC3Denum mode, WGC3Dint first, WGC3Dsizei count, WGC3Dsizei primcount) { }
     virtual void drawElementsInstancedANGLE(WGC3Denum mode, WGC3Dsizei count, WGC3Denum type, WGC3Dintptr offset, WGC3Dsizei primcount) { }
@@ skipping 18 matching lines @@
     virtual void compressedTexSubImage3D(WGC3Denum target, WGC3Dint level, WGC3Dint xoffset, WGC3Dint yoffset, WGC3Dint zoffset, WGC3Dsizei width, WGC3Dsizei height, WGC3Dsizei depth, WGC3Denum format, WGC3Dsizei imageSize, const void *data) { }
     virtual void copyBufferSubData(WGC3Denum readTarget, WGC3Denum writeTarget, WGC3Dintptr readOffset, WGC3Dintptr writeOffset, WGC3Dsizeiptr size) { }
     virtual void copyTexSubImage3D(WGC3Denum target, WGC3Dint level, WGC3Dint xoffset, WGC3Dint yoffset, WGC3Dint zoffset, WGC3Dint x, WGC3Dint y, WGC3Dsizei width, WGC3Dsizei height) { }
     virtual WebGLId createSampler() { return 0; }
     virtual WebGLId createTransformFeedback() { return 0; }
     virtual void deleteSampler(WebGLId sampler) { }
     virtual void deleteSync(WGC3Dsync sync) { }
     virtual void deleteTransformFeedback(WebGLId transformfeedback) { }
     virtual void drawRangeElements(WGC3Denum mode, WGC3Duint start, WGC3Duint end, WGC3Dsizei count, WGC3Denum type, WGC3Dintptr offset) { }
     virtual void endTransformFeedback(void) { }
-    virtual WGC3Dsync fenceSync(WGC3Denum condition, WGC3Dbitfield flags) { return 0; }
+    virtual WGC3Dsync fenceSync(WGC3Denum condition, WGC3Dbitfield flags) { return nullptr; }
     virtual void framebufferTextureLayer(WGC3Denum target, WGC3Denum attachment, WGC3Duint texture, WGC3Dint level, WGC3Dint layer) { }
     virtual void getActiveUniformBlockName(WebGLId program, WGC3Duint uniformBlockIndex, WGC3Dsizei bufSize, WGC3Dsizei *length, WGC3Dchar *uniformBlockName) { }
     virtual void getActiveUniformBlockiv(WebGLId program, WGC3Duint uniformBlockIndex, WGC3Denum pname, WGC3Dint *params) { }
     virtual void getActiveUniformsiv(WebGLId program, WGC3Dsizei uniformCount, const WGC3Duint *uniformIndices, WGC3Denum pname, WGC3Dint *params) { }
     virtual void getBufferParameteri64v(WGC3Denum target, WGC3Denum pname, WGC3Dint64 *value) { }
     virtual WGC3Dint getFragDataLocation(WebGLId program, const WGC3Dchar *name) { return -1; }
     virtual void getInteger64v(WGC3Denum pname, WGC3Dint64 *data) { }
     virtual void getIntegeri_v(WGC3Denum target, WGC3Duint index, WGC3Dint *data) { }
     virtual void getInteger64i_v(WGC3Denum target, WGC3Duint index, WGC3Dint64 *data) { }
     virtual void getInternalformativ(WGC3Denum target, WGC3Denum internalformat, WGC3Denum pname, WGC3Dsizei bufSize, WGC3Dint *params) { }
@@ skipping 42 matching lines @@
     virtual void vertexAttribI4iv(WGC3Duint index, const WGC3Dint *v) { }
     virtual void vertexAttribI4ui(WGC3Duint index, WGC3Duint x, WGC3Duint y, WGC3Duint z, WGC3Duint w) { }
     virtual void vertexAttribI4uiv(WGC3Duint index, const WGC3Duint *v) { }
     virtual void vertexAttribIPointer(WGC3Duint index, WGC3Dint size, WGC3Denum type, WGC3Dsizei stride, WGC3Dintptr pointer) { }
     virtual void waitSync(WGC3Dsync sync, WGC3Dbitfield flags, WGC3Duint64 timeout) { }
 };
 
 } // namespace blink
 
 #endif