Revert of Remove create/delete methods from WebGraphicsContext3D.

third_party/WebKit/Source/modules/webgl/WebGLFramebuffer.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 183 matching lines @@
 {
 }
 
 WebGLFramebuffer* WebGLFramebuffer::create(WebGLRenderingContextBase* ctx)
 {
     return new WebGLFramebuffer(ctx);
 }
 
 WebGLFramebuffer::WebGLFramebuffer(WebGLRenderingContextBase* ctx)
     : WebGLContextObject(ctx)
-    , m_object(0)
+    , m_object(ctx->webContext()->createFramebuffer())
     , m_destructionInProgress(false)
     , m_hasEverBeenBound(false)
     , m_readBuffer(GL_COLOR_ATTACHMENT0)
 {
-    ctx->contextGL()->GenFramebuffers(1, &m_object);
 }
 
 WebGLFramebuffer::~WebGLFramebuffer()
 {
     // Attachments in |m_attachments| will be deleted from other
     // places, and we must not touch that map in deleteObjectImpl once
     // the destructor has been entered.
     m_destructionInProgress = true;
 
     // See the comment in WebGLObject::detachAndDeleteObject().
@@ skipping 141 matching lines @@
     // Both the AttachmentMap and its WebGLAttachment objects are GCed
     // objects and cannot be accessed after the destructor has been
     // entered, as they may have been finalized already during the
     // same GC sweep. These attachments' OpenGL objects will be fully
     // destroyed once their JavaScript wrappers are collected.
     if (!m_destructionInProgress) {
         for (const auto& attachment : m_attachments)
             attachment.value->onDetached(context3d, gl);
     }
 
-    gl->DeleteFramebuffers(1, &m_object);
+    context3d->deleteFramebuffer(m_object);
     m_object = 0;
 }
 
 bool WebGLFramebuffer::isBound(GLenum target) const
 {
     return (context()->getFramebufferBinding(target) == this);
 }
 
 void WebGLFramebuffer::drawBuffers(const Vector<GLenum>& bufs)
 {
@@ skipping 41 matching lines @@
     return GL_NONE;
 }
 
 DEFINE_TRACE(WebGLFramebuffer)
 {
     visitor->trace(m_attachments);
     WebGLContextObject::trace(visitor);
 }
 
 } // namespace blink