Remove WebGLObject maps from WebGLRenderingContextBase and WebGLContextGroup.

third_party/WebKit/Source/modules/webgl/WebGLBuffer.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 24 matching lines @@
 }
 
 WebGLBuffer::WebGLBuffer(WebGLRenderingContextBase* ctx)
     : WebGLSharedPlatform3DObject(ctx), m_initialTarget(0), m_size(0) {
   GLuint buffer;
   ctx->contextGL()->GenBuffers(1, &buffer);
   setObject(buffer);
 }
 
 WebGLBuffer::~WebGLBuffer() {
-  // See the comment in WebGLObject::detachAndDeleteObject().
-  detachAndDeleteObject();
+  runDestructor();
 }
 
 void WebGLBuffer::deleteObjectImpl(gpu::gles2::GLES2Interface* gl) {
   gl->DeleteBuffers(1, &m_object);
   m_object = 0;
 }
 
 void WebGLBuffer::setInitialTarget(GLenum target) {
   // WebGL restricts the ability to bind buffers to multiple targets based on
   // it's initial bind point.
   ASSERT(!m_initialTarget);
   m_initialTarget = target;
 }
 
 }  // namespace blink