Revert of Remove create/delete methods from WebGraphicsContext3D.

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

 /*
  * 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 4078 matching lines @@
     bool possibleDirectCopy = false;
     if (functionType == TexImage2DByGPU) {
         possibleDirectCopy = Extensions3DUtil::canUseCopyTextureCHROMIUM(target, internalformat, type, level);
     }
 
     // if direct copy is not possible, create a temporary texture and then copy from canvas to temporary texture to target texture.
     if (!possibleDirectCopy) {
         targetLevel = 0;
         targetInternalformat = GL_RGBA;
         targetType = GL_UNSIGNED_BYTE;
-        contextGL()->GenTextures(1, &targetTexture);
+        targetTexture = webContext()->createTexture();
         contextGL()->BindTexture(GL_TEXTURE_2D, targetTexture);
         contextGL()->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
         contextGL()->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
         contextGL()->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
         contextGL()->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
         contextGL()->TexImage2D(GL_TEXTURE_2D, 0, targetInternalformat, canvas->width(),
             canvas->height(), 0, GL_RGBA, targetType, 0);
     }
 
     if (!canvas->is3D()) {
         ImageBuffer* buffer = canvas->buffer();
         if (!buffer->copyToPlatformTexture(webContext(), contextGL(), targetTexture, targetInternalformat, targetType,
             targetLevel, m_unpackPremultiplyAlpha, m_unpackFlipY)) {
             ASSERT_NOT_REACHED();
         }
     } else {
         WebGLRenderingContextBase* gl = toWebGLRenderingContextBase(canvas->renderingContext());
         ScopedTexture2DRestorer restorer(gl);
         if (!gl->drawingBuffer()->copyToPlatformTexture(webContext(), contextGL(), targetTexture, targetInternalformat, targetType,
             targetLevel, m_unpackPremultiplyAlpha, !m_unpackFlipY, BackBuffer)) {
             ASSERT_NOT_REACHED();
         }
     }
 
     if (!possibleDirectCopy) {
-        GLuint tmpFBO;
-        contextGL()->GenFramebuffers(1, &tmpFBO);
+        WebGLId tmpFBO = webContext()->createFramebuffer();
         contextGL()->BindFramebuffer(GL_FRAMEBUFFER, tmpFBO);
         contextGL()->FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, targetTexture, 0);
         contextGL()->BindTexture(texture->getTarget(), texture->object());
         if (functionType == TexImage2DByGPU) {
             contextGL()->CopyTexSubImage2D(target, level, 0, 0, 0, 0, canvas->width(), canvas->height());
         } else if (functionType == TexSubImage2DByGPU) {
             contextGL()->CopyTexSubImage2D(target, level, xoffset, yoffset, 0, 0, canvas->width(), canvas->height());
         } else if (functionType == TexSubImage3DByGPU) {
             webContext()->copyTexSubImage3D(target, level, xoffset, yoffset, zoffset, 0, 0, canvas->width(), canvas->height());
         }
         contextGL()->FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0);
         restoreCurrentFramebuffer();
-        contextGL()->DeleteFramebuffers(1, &tmpFBO);
-        contextGL()->DeleteTextures(1, &targetTexture);
+        webContext()->deleteFramebuffer(tmpFBO);
+        webContext()->deleteTexture(targetTexture);
     }
 }
 
 void WebGLRenderingContextBase::texImage2D(GLenum target, GLint level, GLint internalformat,
     GLenum format, GLenum type, HTMLCanvasElement* canvas, ExceptionState& exceptionState)
 {
     if (isContextLost())
         return;
     if (!validateHTMLCanvasElement("texImage2D", canvas, exceptionState))
         return;
@@ skipping 2174 matching lines @@
         contextGL()->PixelStorei(GL_UNPACK_ALIGNMENT, 1);
 }
 
 void WebGLRenderingContextBase::restoreUnpackParameters()
 {
     if (m_unpackAlignment != 1)
         contextGL()->PixelStorei(GL_UNPACK_ALIGNMENT, m_unpackAlignment);
 }
 
 } // namespace blink